I read this sub to make me feel better about myself.
What made you look for something to make you feel better?
A troll who insulted me and insulted people that I like and who I know and who I respect and who mean a lot to me.
Sounds like their behavior is a little flakey. It's best to turn off their posts or even block them.
You are right, I should unfollow people who  show hate. I am not sure I have followers since I don't post much.
It will be good for you to avoid those people who are providing a lot of hate. It will make you feel better. You might have followers because you don't show toxic behavior.