Block users, block communities, setup filters for keywords. But you will not fully escape it because there is actual doom in this world. Things aren't good for everyone, no matter how hard people try to tell you it's the best it's ever been.
Its a pretty low bar to clear when you use history as your measurement. Comparing our information age civilization with feudalism is not the win people think it is. Things were worse, but that doesn't mean things are good as is. Have higher standards.
That said, I hope things are good for you and your people. Peace.
Your body your choice.