I was on FB "religiously" from when I first signed up in '08 until 2016, then again only in private groups from '17 to '19. (I didn't have access to a device for a year) Only TWO people in my "friends" list contacted me in that year, to see what happened, 2 people I've never met in person, only "knew" them through FB. None of my former classmates, friends from work, nor my family ever contacted me. A former GF tried to "re-friend" me about 5 years after we split, but I was still too bitter to consider it. Around 2020 and Covid, 3 other people from what was now my "former life" contacted me, but by then I was so distraught over my situation that I did not want anything to do with FB, or anybody I used to know, merely by association.
Why am I saying all that? To me, it helps to know that there ARE people out there who can be your friend... but you will know who by how they treat you through the worst of things. Also, FB is a "crapshoot"... you may or may not nurture lasting relationships there... if you can even stand it.