Mine was like that too. I started using the "I don't want to see this" flag pretty aggressively, and outright blocked a lot of accounts I had no interest in. It has worked pretty well - aside from some ads, my feed is from people I follow. I thought they weren't posting, but it turns out the algorithm was prioritizing NBA memes and other crap.
I did that for a year or two, but it didn't work. Facebook always found new kinds of garbage to recommend. If anything, FB started showing more algorithmic content and fewer posts from my friends. I eventually stopped posting on Facebook, because it had become a wasteland almost devoid of people.
