I have a similar experience, but when it comes to: people posting less --> "XY liked this", ads, and "you could like this" posts I'm pretty sure the cause and

I have a similar experience, but when it comes to: people posting less --> "XY liked this", ads, and "you could like this" posts I'm pretty sure the cause and effect is reversed. Facebook decided to prioritize BS over friend content on the feed, and suddenly it became lame because nobody was interacting. A bit chicken-and-egg / feedback cycle I suppose, but I really think FB started it by adding "sponsored content" and even likes (remember when you had to actually type out a response if you wanted to reply?).