There seems to be a trend for social media as a whole not to be especially social these days, it's become more watching/seeing other people's content and making content for stuff like TikTok feels like a lot of effort. Also algorithms make it so popular content shows over friend's content, so it's not useful for that. Obviously, I'm an old person, but my 15yo doesn't really post much either, they just look at other stuff and comment on it, but although they are on Insta and TikTok they seldom post.
12yo DC has a mobile but mostly uses it for playing games, occasionally messaging friends on whatsapp. He doesn't have any interest in TikTok, Insta or Snapchat or whatever.
I'm interested in how other people's kids are using social media these days - are they interested in big 'influencer' types? Or more into niches? eg my teen is very into LGBTQ+ stuff, activism etc but no 'big names' on social media.