>I didn’t like my online persona.

I think this is one of the bigger factors when people choose to quit social networks, even if they don't realize it explicitly. There's such a "hustle culture" to get likes and favorites that it really warps what you can post. You can't really be vulnerable on a social network because it either gets ignored or interpreted as another hustle ("You got this!!!") because the surrounding content from everyone else is "Look at how great I am!". YouTube creators have to explicitly say "Please like and subscribe!" but that's implicit and pervasive on Twitter and Facebook by their very nature.

I used facebook for promoting local events but in the last ~5 years it was less and less effective for that. Then I used it only for meme groups and getting angry at strangers. Hard quit last summer and never looked back.