

Using a blacklist approach seems to be very popular, but here’s an alternative for those who want to try something different.
Subscribe to all the communities you consider worth your time. Change the setting of your default feed so that home=subscribed. When you’re just casually browsing, you’ll see posts from the communities you’ve explicitly approved, so you can be pretty sure that you won’t be seeing stuff you don’t want to be exposed to.
If you want to discover new and interesting places, there are actually a few communities specifically for that purpose. ([email protected] and [email protected]) Just subscribe to those, and your home feed will introduce you to new things from time to time. If you want to see shitposts, politics, memes or a combination of all three, you can always visit the “all” feed.
Username (top right corner), settings, scroll down… Keep on going… There! Sort type: top hour.
If you’re using a mobile client, it’s also somewhere in the settings. Probably buried deep.