Outside of "The West" Facebook has very different uses than either Instagram, Tiktok or Twitter. In Asia people use it as a faster way to build a free homepage with a forum, a newsletter etc. Most restaurants, schools, hiking groups, or pretty much any real-life entity has presence on Facebook.
Here I *need* a Facebook account just to figure out whether my language school is going back to presence classes or stays online next week, or if this and that Restaurant or club is still closed due to Covid or not. There is no way to do this on Tiktok or Snapchat. Just due to this, Facebook is not going anywhere any time soon, as much as I would like it to die in a fire. This is very unfortunate, because I find the entirety of "social" media an annoying, useless troll cesspit.