A few years ago I started actively clicking "not interested" on every type of content that I didn't want to see, and slowly but surely I managed to get rid of all memes, news, and uninteresting bits.
Now I'm left with discussions about AI papers, local events that friends are attending, and updates from friends in other countries. And even then, my feed is so uninteresting that I'm not tempted to scroll through it every day. Of course, this doesn't remove the million other issues with Facebook but at least it doesn't mess with my happiness