This is the biggest problem the fediverse has. Because it was set up by people who live/are good at IT it’s just assumed that everyone is. It’s open source; don’t like something, just code your own version! Unfortunately, that will lock out around 98% of all users and we (Lemmy/kbin) will just be some backwater circkejerk of interests which overlap with programming as a hobby.
I think the mods are currently drinking from a firehose and, if we want to be part of the solution, the best thing we as users can do is be patient and thick skinned until the assholes are brought under control. That really could mean just abandoning a big server like Lemmy.world for something quieter like sopuli.xyz or a defederated instance like beehaw.
There is no karma here, moving to a new server and deleting the old server account should be viewed as a tactical win. If you want to get in the mud and pursue the troll in their own instance, make an account there and plug in your angry keyboard. If you just want to find a place to be comfortable, find it and stonewall that asshole. You’re not really losing any reputation or, one will presume, friend base since you’ll probably subscribe to the nicer communities using the same public username when you move instances.
I wish you all the best.