Did you try some of the smaller instances? Big instances will inevitably face the same problems that Reddit has/had. A platform is as good as it’s users, and you can only moderate up to a certain point untill it becomes straight up censorship. Sadly more people also means more trolls and shitposters.
But yeah it’s still annoying and I fully agree with what you said.
Download Firefox. Look up “ublock origin firefox” in search engine of choice. Click install. Done!
It’s that easy…