Facebook doesn’t understand why it is losing to TikTok and keeps copying them, but it is not working. And in doing so, it has changed Instagram so much that even the most loyal users are giving up.
Essentially, it comes down to a major shift in user behaviors, away from following your friends, and seeing all the random stuff that they post, to following trends, and engaging with the most popular, most engaging content from across the platform, as opposed to walling off your own little space.