What is the solution? You imply that it is just to quit using it, but then you mention how super-addictive social media and especially TikTok is. Which it is, by design, by very smart people who very intentionally exploit every aspect of human psychology they can, for profit. I don't blame the victims of social media, I blame the architects of it. To me it's clear that social media does more harm than good, and is only useful to generate ad revenue, which to me is also clearly more harm than good, and should all be nuked from orbit.
Just use another platform if you can't quit cold-turkey.
But yeah, the solution is to not let them collect data about you.
Social media is addictive, but Hacker News overplays how addictive it is.
Most of what keeps people on it isn't heroin-like dependence but convenience and habit.
The solution is simple, go interact with actual humans and make an actual bond. Hanging out with good friends feels way better than any social media I've ever used and I've been online shitposting since 1995.