I remember what made me quit facebook, way before it became Meta: the TV serie Person of interest. It gave me a big awarness of the scale of mass surveillance. I already had the project to quit because of Zuck’s shenanigans and the lack of interest i had in the platform, but this was the last straw for me.
I never used most of them. I quit reddit when genzedong went dark. Quit tiktok when the ads got more common a year ago or so. I still use a FOSS frontend to watch youtube videos does that count?