Upvoting. Pisses me off because I found alternatives (sadly in a G7 area so I cannot answer your question, closest things I know of for my G7 area is NextDoor which does have a decent amount of local participants but is not selling-focused, and BuyNothing which has basically no participants in my area) and they have so little usage, so if I want to participate in random-person-to-random-person selling I HAVE to use Meta's piece of shit. I'm usually not that aggressive and I usually don't namecall. I really hate Facebook.
I just will not participate. I am also lucky enough to be in a financial and material situation where I can middle finger them instead of being forced to use it because I am in desperate need of a cheap deal for some item quick.
Will investigate other options mentioned here, good question.