Some people don't like how you behave. That could have two reasons:
- You behave badly
- The people in those communities don't like your behavior
And anything in between.
I got banned from r/Korea back in the day because I linked to my own peertube instance, they didn't like it.
On Lemmy I'm trying to get the !korea@lemmy.funami.tech going but as you can see it's only posts made by me :D but sometimes, very seldom there is a comment and some likes or to a lesser extend dislikes. I think most of them are people who browse /all and by chance see those posts there.
But if I don't post then there is no content about Korea at all ^^
Anyway, remember that you can't change other peoples behavior, only yours.