A few minutes ago, I asked the AI ChatGPT some subjects I can tralk bout and heit said to me "My Dream".

When you sleaep, you can dream sometimes dream, but it's not always a good dream.

Some people can dream a lot andwhile others can dream less.

When contrasting 2 things "dream a lot" vs. "dream less", it makes sense to use words like "while" or "but".

I think it depends ofn many things and, but scientists canmight know what influences that, according to me.

"according to me" doesn't make sense in this context. It sounds like you are saying "I am the reason that scientists might know..."

"I think" is good enough to get the point across that you "might not be 100% certain".

There's a saying my brother told me that I find very cool "If people are not laughing at your face when you tell them your dream, it's because your dream isn't big enough big".

This saying is meaningful and very powerful forto me.

Every body has to dream, it's so important!

You can dream about everanything, but you have to dream.

For instance, you can dream to have a beautiful car or to rushfly/go to the moon one day.

I prefer to call them objectives because dreams sometimes lookseem impossible to rushachieve.

"rush" usually means "to go/move fast" or "to do something fast"

The fFirst of all, is to be fluent in English.

When I was younger, when I and studied it at school, I found it pointless.

During the "Big Holidays like" (as we call it in France/French), I wanted to learn something useful and I thought that learning English could be very useful.

Alternate suggestion:
"Like we say in France, during the 'Big Holidays'..."

Thereby, I made a routine that has evolved during the 3 last months.

I usually only hear "therefore" being used, but maybe that's an American-English only thing? Maybe it's different in British-English?

AtIn the beginning, I practiced English for only 30 minutes a day.

Now I improve my English for about 2 hours a day.

Being fluent in English is a dream for me because it allows you to do so many things.

Alternate suggestion:
"...because it allows for so many things."

I have been going to the gym for only for 2 months, so I can progress a lothave a lot of room for progress/improvement(s).

I can't explain why, but "so I can progress a lot" doesn't quite sound correct in this sentence. On it's own, it's grammatically correct, just that I don't think it fits this context well.

Being muscular is very helpful for your confidence.

A few synonyms for "muscular" are:

"buff"
"ripped"
"shredded"

super colloquial would be:
"built"
"beefy"
"swole"

They can all replace "muscular" in this sentence.

Thanks to this objective, I started taking care about my alimentanutrition because it's almost thatas important.

I don't think I've ever heard "alimentation" used before. I hear "nutrition" used all the time.

"almost that important" has the nuance of sounding like "it's not important" (It sounds inherently negative).

My third objective is to find a true love and to have a job I love too.

According to me,I feel like it must be so cool to find a wooman you really love.

"According to me" also doesn't work here. Here are a few examples I would use the phrase in:

<In response to someone's claim (or their own response)> "well according to me, you're wrong"
"According to my calculation, <some science mumbo jumbo>"
"According to my map, it says we should go this way"
"According to my point of view, the Jedi are wrong"

I am currently speaking to a girl I really enjoy/like/appreciate and I hope so strongmuch that it will last for the rest of our life and that it's a sincere love.

I am 16 and I am a good student.

I try to work hard in order to be able to get a job I really love when I am older.

I don't know what I want to do yet when I'm older, but I know it will be around thsomething like engineerying.

Alternate suggestions:
"... it will be something in the field of engineering"
"... it will be around/to the tune of engineering" (This is a pretty uncommon phrase, and I'd suggest not using it. I just wanted to give you an example with the word "around" in it lol).

I love maths and physics.

Heck yeah! Me to!
Also, in American-English, we call it "math" instead of British-English calling it "maths"

I hope you enjoyed reading my text!

I can't remember if I made this correction on one of your post, or someone else's before. Since the reader has already finished reading your text by this point, it would be in the past-tense.