The rules of conduct on my channel can be summed up in one sentence: Behave appropriately.
I don't mind swearing in the chat, but it's better not to use well-known forbidden words.
In any case, you can get a permanent ban for advertising, malicious links (including screamers), toxic and rude behavior, or if you manage to piss off the streamer/moderator (very hard level).
If you want to be unbanned, send a private message. Even if the ban was justified, you can always get unbanned by writing an appropriate request.