can i practise english with you guys ?

Sure. Just please remove wanna and gonna from your vocabulary first

Happy to help. I friended you so we'll see each other when we're here.

My English is not very good. I would like to ask you guys if you would be kind enough to help me master the English language.

We can talk about anything and maybe you can help me fix and improve my grammar and writing skills?

Hopefully we can build a friendly rapport and my grammar and writing skills will improve and I can learn more.

https://similarworlds.com/school/4805544-i-hate-my-school-i-dont-wanna-go-to-school-is-made-my-mental

If you can't be arsed learning at school - where they have facilities for those falling behind - what makes you think that conversation with non-professionals is going to fix anything?

Written English is almost always more formal than spoken English. I would correct your post as follows:

[quote][i]Can I practise English[/i] with you guys?

[i]My English [/i]is not very good, so [i]i[/i] want to ask if you guys want to practise [i]English[/i] with me, just a couple of [i]minutes[/i] a day, we can talk about anything and you can fix my grammar and teach me [i]better[/i] English.
[/quote]

I have italicised the changes I made.

Does your mother tongue distinguish between upper and lower case (majuscule and minuscule)? I ask because most of the errors in your post are that you have used lower case where upper case should be used.

Your English, on the evidence of what you have written here, is actually very good. You just need more practice at writing it.

Good luck distinguishing British English from American English much less formal from informal of either or slang from either. 🤣

And that's just two forms of English. Not even Canadian and Australian are the same.

Fair dinkum! 🤣

You can try, but I'm not sure English teachers would say my English writing is very good either, especially the grammar part.

I’ll be happy to help

Run on sentence :)

Where are you from?