I'm the same way, I watch (hate to admit) hours of YouTube every day. I do subscribe to a lot of people, but only after I've seen several of their videos and enjoyed them. Primarily I refresh the homepage and see if anything peeks my interest. In my personal opinion YouTube has one of the best algorithms, generally showing me a good mix of stuff I'm interested in (with addons and whatnot to hide the bullshit and recommended MSM garbage). Conversely Instagram and Facebook have some of the consistently worst algorithms, but I think Facebook is getting better about it, Instagram however NEVER shows me ANYTHING I could ever possibly care about and usually actively get annoyed by.