AtIn the beginning it was my two ""parents"" (I put "" because they don't deserve that title, long story) and me.

At the beginning refers to physical space, in the beginning refers to time.

4 years later my sister was born,; we never got along inas childhoodren.

Or "during our childhood".

6 years later (when I hadwas 10 y. o.) my brother was born.

We don't "have" years (and certainly not "years old") in English.
We say either "when I was 10" or "when I was 10 years old".

At 15 years oldf age "HE" (I wrote it in a specific way to emphasize my hate tored towards that person) had to leave my house, my scholar. My psychologist talked with my mom and giaved a this warning, I: if he didn't leave the house my psychologist was going toould call the police.

The expression "scholar psychologist" doesn't exist in English. A scholar is an academic who engages in research.

Now I have more thanam over 18 years old, I don't want to be exact.

Why does ithis sounds so shady?

I was born when my mother dihadn't finished school, and neither himad he.

You're talking about a past event that hadn't been completed before another past event, which triggers the past perfect.

He was an alcoholic and an abuser, a corrupted police,man, and a thief of as security guard.

Generally when talking about alcoholic addiction we use "alcoholic" as a noun. When used as an adjective it generally means that it has something to do with alcohol rather than alcoholics.
You could also put "police officer" (more formal) or "cop" (informal) instead of "policeman".

My mom was someone with many problems, and insecurities, and her own family was the same or worste.

A child in thatose conditions couldn't end up fine.

The word is "to end up". "To end" is a different word which means to terminate, finalise, bring to an end.

I'm not gonna shut up withabout it, he was the worst piece of shit.

He was the shit - he was great, awesome.
He was a piece of shit - he was awful.

We've suffered a lot,; we have many traumas even now, many years later.

We've suffered: up until the present.
We suffered is OK but this means a closed period in the past that is over.

I hated my mother for many years when I was a teen, because she didn't changed anything.

The auxiliary "do" triggers the root form of the verb. Verbs are not conjugated after "do".

I was so tired and mad withabout everything, so angry.

I washad givingen up withon everything: my life, my family and the world.

I wasfelt so hopeless.

To feel hopeless means to feel that you have there is no hope for you, to feel very pessimistic.
To be hopeless means to be bad at something, to be unskilled.

SomOne day came a woman to thecame to my class, and she introduced herself: "Hello everyone, my name is Andrea and I'm a psychologist."

Andrea was the uniqueonly light amongin those dark years, I'll no wouldn't be here without her help.

"Unique" means unlike other things, having characteristics that set it apart. It would mean she's a special kind of light compared to all the other people who were also light, but I think you're saying that she was the only light in the darkness.

Because of everyall things I was an insecure, hostile and distrustful person.

But I decided to ask for help,; many years passed and she giaved to me all the atetention and help that I needed at that time.

Since "HE" leavedft the house, my mother started changeding gradually.

HowAs she changed I changed my feelings to herwards her started changing too,; I don't hate her now, but I can't forgive her for all the suffering.

She wanted a boyson before beingthe age of 20 years old.

She, knowing everything, decided to have a kid with the first stupid thatidiot she found,; a kid to be used as an object to take out all her angryer on.

"Stupid" is an adjective. "Idiot" is a noun.

Of course, Hhow could a 4 years old child be able to fight two stupid shits?

a 4 year old = someone who is 4 years old

I'm sorry, I'm holding back my tears, I want to cry.

I don't know what ist is to miss your mother, laugh with you father, I don't know how iswhat that feeling is like.

We only invert the word order when asking questions, not when creating subordinate clauses with interrogative pronouns.

What IS that feeling like? (question)
I don't know what that feeling IS like. (statement)

My mother is a better person now, my siblings are happy and living in better conditions,; they've got the mother that I never had, and I'm happy for them.

"They got" is acceptable in some North American dialects, but is generally seen as too informal for writing.

I know that she regrets for all the those things ofin the past.

She worricares about me, supports me and doesn't pressure me.

"Worry" is fine but it implies that something bad is already happening, whereas "care" means she shows interest whether or not there is a crisis at foot.

I see someone with blood ties that feels regrets and tryis trying to fix the things.

"To regret" requires a direct object, so I've replaced it with "to feel regret" here. It could also be "that regrets everything", "that regrets certain things in the past", etc.

Tries to fix things would mean that she generally tries to fix different things, whereas trying to fix things means that she is currently working on fixing certain things.

Haveing a mom isn't a blood tie or title,: it's a connecction, a feeling that cames from the inside.

When I read people saying "I miss my mom" "I love my mom", I just feel that empty space and I repeat to myself "HowWhat is that feeling like?

Believe me,: I'm not the most sad and poorsaddest and most pitiful person ofin the world, but my childhood and adolescence wasere horrible.

Generally we only use "poor" to mean unlucky in interjections: "oh you poor thing"! Here you could put most pitiful, most pathetic, unluckiest, or something like that.

How muchhorrible?

Everyday there was humiliations and threats.

My mother tried to kick me out because I said, in a really calmed way "I don't think it is okay to force my sister to play something she doesn't want to".

I ran to the bathroom to help my brother, otherwise """HE""" willould hit him because his stupid brain caouldn't do anything withouth hitting someone.

Use "would" because it's in the past.
without + verb triggers the gerund

What does he said?

What did he say?

In English, something like "Thank your sister, otherwise I would have taken the shit out of you!

In English we have a similar expression: "to beat the shit out of someone".

"Sacado la mierda" is an expression to threaten with hitsbeating.

Threat is a noun, threaten is a verb.

Fortunately I've forget the most part ofotten most of the bad things.

I can't deal with this...

To express exasperation in English we'd say something like "I can't deal with this", "I (just) can't handle this", "I can't go on like this".

I'm sweating and holding back my tears at the same time.

To "hold" means to have in your hand.
To "hold back" means to stop from coming out.

Even Iif my mother is a good person now, she can't erase anything of thate shit of past that I hadI experienced in the past.

I'm trying to get over it, but it is so hard.

I guess I'll have many errors, I'm not gonna check it soonfor now.

She said told me many times, that I was the perfect child for her.

I was so nearclose to end with everythinging it all.

Well, my mother was nearclose to ending things with me and my sister when my grandmother died.

"Because they will take care of you when you are old" "Because I want a mini me" "Because they are cute" "Because people say that you should" "Because my parents want grandchildren" "Because all my friend have one" "Because it is the only way to be complete" "Because we were born for that" "Because I didn't used protection and we don't have any other option"

I'm not gonna have kids for thatose simple reasons.

"reasons" is in the plural

I heard all these things from real parents and people who wantsed to have kids.

people is plural so it would be "want", and also "heard" is in the past so want should also be in the past (wanted)

I'm not gonna create a new life just because I can or I want to.

If I have a kid, I'll make sure to give them the best: a nice family, a good environment, a brilliant future and above all a safe space, a good life.

"Give" requires an indirect object ("them").

I'm gonna think "What could that little crieature want and need?.

I apprecciate it so much that I can't do it If I'm not good enough, because I know how it is to grow up in a terrible family.

We have problems sometimes as do all the couples, but we progresskeep moving forward.

Generic plural doesn't take the definite article in English. "All the couples" would mean a specific group of couples that both you and the reader know about: "all the couples here", "all the couples I mentioned", "all the couples in my life".

"but we're getting better" is another option for the second part.

We learn with theover time.

Time is a generic uncountable noun and doesn't take the definite article.

He is the closest person forperson that is the closest to me, and I talk with him when I'm stressed and worried about somethingtuff, especially If I'm remembering bad things or having nightmares.

special - unique
especially - particularly

Or "he's the most important person in my life", "he's my closest friend", etc.