I have started "hitting block all from [whoever created the meme/video]". It makes a difference, but only a small one. the other thing I do is after blocking 2 I close facebook. I hope more people do this - I want it to start showing up in statistics that shared memes and videos is harming engagement numbers, while friends and family sharing their life is helping. Thus encouraging whatever change they need to make to give me more of that.
I still have a number of distance friends/family who share their life of facebook so there is value to remain there. Facebook is a great way to see my daughter singing "baby shark" - if you don't personally know me you don't want to see that, but if you know me you want to see it.