I have had two Facebook accounts. The first used my first and last names, and was used to keep in touch with family, friends and former colleagues. Meta closed it down, possibly because I made too many derogatory comments about Trump. I opened another account using my middle name as surname, but that was also eventually closed down by Meta. However, when my wife died, her account was not closed, so I use it. I have not linked anyone to it and have not made any posts. Her former colleagues are still linked and they would question how she could be posting to it.
I use it to get things like the picto-grams and geometry puzzles I have posted in the Brain Teaser thread, jokes I post in Quickies Pt II and silly photos posted on this site. When I left school 62 years ago, I had failed Leaving Certificate, now known as HSC, so knew nothing about new maths. I had never learnt about BODMAS or PEMDAS, and didn't know about factorials, denoted by an exclamation mark (5 x 3!). I only learnt about these through Facebook.
Many people rely on Youtube for all sorts of information. I visit it occasionally for videos of specific things, but keep up to date with Facebook, particularly what lots of Americans think about Trump. There are also lots of comedy reels, such as Whose Line Is It Anyway, and other comedy clips. You don't have to post on FB, but you have to have an account to see much of the stuff on there. You don't even need to use your name. I had one friend who called himself Russ T Nails, another colleague who used their initials, Kay Elle Ess.