I'm Mia, my Korean name is Youjin.

... and I am Lionel, nice meeting you here.

I am currently living in Canada.

I have lived in Canada for around 17 years in the past myself.

So, I'm studying English sovery hard.

I am learneding English atfor the first time,. I wasam so frustrated because I madekeep making the same mistake over and over again stilleven now.

I am learning Japanese myself so I totally understand the frustration.

I truly want to breakovercome my fears, I keep by persistently speaking, writing, listening and reading in English.

please come with mejoin me in my English journey.

I'm Mia, my Korean name is Youjin.

"Korea" is a noun, "Korean" is an adjective

I am currently living in Canada.

"living" needs to be paired with "am" / "is" / etc. as appropriate for the subject. In this case you used "I", so you need "am"

You could also say "I currently live in Canada" instead.

So, I'm studying English so hard(very hard / a lot).

"very" is the more natural strengthener to use here rather than "so", but "a lot" is even more likely to be used by natives.

IWhen I started learneding English atfor the first time, I was so frustrated because I made the same mistake over and over again, and still do now

1. You're using "I learned English at the first time" as a setting in time, so you need to put "When" before it
2. Since you're still learning English, the action isn't done, so it's better to talk about "when you started learning" rather than "when you learned", as the latter implies being finished with something.
3. The phrase is "for the first time" rather than "at the first time"

I truly want to break my fears, I(face/defeat) my fears, so I (will/can) keep speaking, writing, listening and reading English.

"so I will keep speaking ..." implies a sense of determination, that you're going to keep doing it until your goal is complete
"so I can keep speaking" on the other hand is talking about the goal, i.e. speaking/writing/listening/... is what you want to do able to do after you face your fears

pPlease come with me on my English journey.

I'm Mia, my Korean name is Youjin.

I'm getting readypreparing to go to college.

So, I'm studying English so hard.

IWhen was learneding English atfor the first time, I was so frustrated because I still made the same mistake over and over again still now

I truly want to break my fears, I want to keep speaking, writing, listening and reading English.

pPlease come with mefollow me on my English journey.

I currently livinge in Canada.

"I am currently living in Canada" or "I currently live in Canada"!

So, I'm studying English aso hard as I can.

as much as I can, as much as possible, etc. - all work

IWhen I began learneding English at the first time, I was so frustrated because I made the same mistakes over and over again still, and even still make them now.

I truly want to breakovercome my fears, I keepso I continue on speaking, writing, listening and reading English.

pPlease come with me on my English journey.

I'm Mia, my Korean name is Youjin.

I am currently living in Canada.

OR I currently live in Canada.

So, I'm studying English so hardas much as I can.

"so hard" isn't incorrect, but it doesn't sound as natural.

IThe first time I tried to learned English at the first time, I was, I would get so frustrated because I would madke the same mistakes over and over again still now.

I truly want to breakovercome my fears, so I keep speaking, writing, listening, and reading English.

pPlease come with me on my English journey.

I'm Mia, my Korea name is Youjin.

I'm getting ready to go to college.,

So,so I'm studying English so hard.

A complete sentence should not start with "so." Instead, "so" is used to connect one complete sentence to the one before it.

When I learned English atfor the first time, I was so frustrated because I made the same mistake over and over again still, which still happens now.

I truly want to breakovercome my fears, so I keep speaking, writing, listening and reading English.

"Break my fears" isn't a natural phrase in English.

pPlease come with me on my English journey.

In English, a journey is something you "go on"
"I'm going on a journey"
"Please come on this journey with me"
This also works for similar words like trip.

I'm Mia, but my Korean name is Youjin.

the "but" adds contrast since your korean name and your name is different

I am currently living in Canada.

Or "I currently live in Canada"

I'm getting ready to go to college.

So, I'm studying English so harda lot of English.

not sure if "so hard" is natural. Maybe you could also say "I'm studying hard to improve my English"

When I learned English at the first time, I was so frustrated because I madke the same mistakes over and over again sup untill now

I trureally want to breakovercome my fears, so I keep speaking, writing, listening and reading English.

pPlease come with mejoin/ support me in my English journey.

"Support" gives the impression that you want people to follow you and encourage you and correct you, which sounds like what you are going for?

I'm Mia, my Korean name is Youjin.

I am (or I'm) currently living in Canada.

IWhen I first started learneding English at the first time, I was so frustrated because I made the same mistakes over and over again still, even now

I truly want to breakovercome my fears, so I keep speaking, writing, listening and reading English.

"break my fears" is understandable; it gets the message across. However, the more typical phrase is "conquer my fears" or "overcome my fears."

pPlease come with me on my English journey.