why was i banned

What does it say when you try to log in?

it just says "player banned, Player has been permanently suspended" and so on so forth with an email saying i got banned. But no reasoning

If you do not see a chat log when you logged in (somewhat good news!), it could be other reason than chat toxicity like account billing issues, account compromise, 3rd-party software usage, etc. Some of these are reversible. You just need to submit a support ticket to get it resolved.

If you do see chat logs, post it so we can discuss.

Yeah contact riot support and or check your email. This has happened to me twice within a couple years, one time being right after I came back from my 2 week ban so I thought I got perma'd haha I truly was so fucking upset for a couple days, turns out my acount had been flagged for being compromised/suspicious activity.

hopefully cause yeah like i said no reasoning yet so i hope its just a fluke