Yeah, I haven't done any tests on this myself but the algorithm is frustrating. I see a lot of posts from people I am not that close with, but I don't really scroll the feed anymore. The only people who really like my posts are family members, and I've heard that once Facebook marks a post as "relevant to family" then it mostly gets pushed to your relatives' newsfeeds, so I'm not sure if non-family people are even seeing my posts.