Don't wait for the algorithm to do the work - it won't. The feeds are built to keep you comfortable, not surprised. What kills discovery faster than anything is staying inside the same platform's ecosystem. YouTube's search bar, TikTok's For You page, Instagram's Explore tab - they're all optimized to show you variations of what you already watch, not genuinely different stuff.
Break out by going sideways. If you're interested in something specific, search for it on Google or Reddit first instead of the platform itself. You'll find niche communities talking about that interest, and those communities usually have people sharing smaller creators constantly. Discord servers, subreddits, even older forums dedicated to your hobby - people there actually vet creators by hand and recommend them based on real conversation, not engagement metrics. Another angle is to follow creators' recommendations of other creators. Most smaller channels will shout out people they respect or collaborate with, so if you dig into those connections you build a network instead of relying on an algorithm.
The slowest but honestly most effective way is just following recommendations from actual people you know. Ask friends what they watch, or post in relevant communities about what kind of content you're craving. Someone will have a channel they're weirdly passionate about that never gets mainstream attention. The algorithm isn't designed to show you that - only humans are.