I don't see any reason why we can't have a tiktok like recommendation engine for the web. (In fact I think that's what bytedance started with[1]? Would be very interested in using an english version of that, maybe RSS based.)

[1]: https://en.wikipedia.org/wiki/Toutiao

No idea about TikTok (never used it, or Twitter/Facebook/MySpace/etc.); however, that sounds similar to the "groups" feature of Identi.ca (now GNUSocial).

I always preferred that way of interacting, since I prefer to see what anyone says about a topic, rather than everything said by some individuals.

Or subreddits on Reddit, for that matter.

TikTok is not personal for most people, it’s just a way to consume content.