You can:
* Use filters liberally to remove posts that annoys you
* Mute or block other people or bots who get boosted into your timeline if you don't want to see them again
* Try to remember to not click on CW's for stuff that will leave you feeling worse
* Unfollow
And you never have to explain why
You can do so for reasons that are entirely "selfish" or "petty"
E.g. "Their jokes were crass so I muted them"
Make the Fediverse a place that's good for you