I find it useful to sign up for multiple accounts and then segregate those into browsing/posting habits for different categories. One for gaming (or other relaxed communities), one for science & tech, one for politics that I only occasionally dip into, one that's a voting only account, etc.

At the very least, you can take a break from communities that can easily be more toxic, whenever you want. If downvotes bother you, I would also suggest signing up with a fediverse instance that disables downvotes.