[navbaker]

This definitely works. I have two profiles on IG: one for musical instrument related things and one for painting miniatures. I’ve been able to keep both profiles strictly on topic by aggressively using the “not interested” button whenever something not related pops up.

[lupusreal]

That's basically what I do on youtube, except not logged in, using browser profiles to keep the cookies separate. If you exercise strict discipline then you can make the youtube algorithm work for you. Slip ups ruin it quick though.