What should I do to makbe friends with them? What should I do to be friends with them?

Understandable, but can be improved

And give me advice on doing betterimproving my English. And give me advice on improving my English.

And give me advice on doing betterimproving my English. And give me advice on improving my English.

And give me advice on doing better English. And give me advice on doing better English.

Don't start a sentence with "And" this word might come after a comma or be in the middle of a sentence. It is mainly used in conjunction. "On doing better English" is not wrong but sounds bad to native listeners so, use "Give me advice on doing better in English." add "in" between "better" and "English." It makes the sentence better.

And they can give me advice oso that I can doing better in English. And they can give me advice so that I can do better in English.

My First recordPost My First Post

In the context of this website, "post" is the more appropriate word.

My First rRecord My First Record

I'm a master's degree student. I'm a master's student.

Alternatively: "I'm a student pursuing a master's degree."

I've studied English through my whole life, but my language level is not high enough to study abroad. I've studied English through my whole life, but my language level is not high enough to study abroad.

I'm going to do daily English challenges to level upimprove. I'm going to do daily English challenges to improve.

"Level up" is generally used for video games.

I'm going to do daily English challenges to level upimprove. I'm going to do daily English challenges to improve.

"Level up" is definitely understandable, but moreso used in the context of video games (such as if you're intentionally trying to compare language learning to a video game).

I'm going to do some daily English challenges to level up. I'm going to do some daily English challenges to level up.

I want to make foreign friendriends with some foreigners. I want to make friends with some foreigners.