TikTok literally monitors how fast you're scrolling past posts. No way that can be recreated without massive privacy violations.

You cannot. There is no way to aggregate all the notes that may exist. We can get pretty close with a big network of nip66 monitors though.

That's okay, I think few are used to "global" algo ranked posts anyway. Maybe on Reddit or YouTube, but for example on yt I either view the subscription time based feed or the home "for me" feed. The global trending feed is never interesting but that may be just me. Whatever feed should probably be personalized which means only running algo on one's wot. Problem, I think is that's either self-host, subscription, or always running resource intensive app for a couple hops. There's wot relays, algo relays, personal haven relays. Be nice to get it wrapped up in a bun. X has probably proved though people are willing to pay for the experience if it's worth it.