My feed is mostly not posts from people I know (for some reason it has started sending me tiktok length clips of standup comedians). Actually it is not so bad, some of the clips are pretty funny, but I could get that sort of content from tiktok or youtube I guess, I just happen to use the facebook app because it is already installed.
Their fundamental advantage was network effect, I guess that is dead now that like 1/5 posts I see is from a friend.