What got me off Facebook was their fucking algorithm. Any time I said anything slightly controversial, like suggesting Trump was being less than honest, Facebook would make sure everyone I knew who disagreed saw it. For EnGaGeMeNt!
After a few engagement blowups, I barely use Facebook anymore. And now when I check, my feed is so full of ads and sponsored posts, and has precious little content from actual friends, that it's just not worth the headache.
I use it to sell things, but that's literally it. Legitimately the only things it's good for at this point. And every time I go on there I'm reminded of how terrible it is. Actually nauseating.
I do ebay too but it's a lot less work to sell local on marketplace so I don't have to risk a bad rating because I took too long finding a box / packing / having issues with USPS not picking up packages etc. I only do porch pickup on FB so I can just step outside and get cash. It's especially great when I'm selling larger things too like PCs, servers, or UPSes which can be ~50lbs to several hundred lbs. I won't ship PCs or even spinning hard drives let alone anything larger like a server.
I was trying to buy a car and tried facebook, but it kept showing me people selling cars for $1234 and from imaginary made up locations. I think they were chop shops.
Possibly, I don't use alternatives much (primarily because I don't sell much in general). I prefer Facebook because so many people are there and it's easier to facilitate cash payments via meetups. But there could be better ones, I'm not all that familiar with Swappa or OfferUp.
Same, I got burnt out on social media partway through the pandemic and just stopped checking FB one day after I turned off app notifications because I got fed up at being buzzed constantly for non-direct-interaction reasons. I feel like it's been a very positive change. I also only go there to sell stuff and I'm glad I feel absolutely zero desire to look at the feed at all.