My personal experience with Youtube recommendations has been really bad for a long time now. The only videos it recommends that I care to watch are from channel

My personal experience with Youtube recommendations has been really bad for a long time now. The only videos it recommends that I care to watch are from channels I'm already subscribed to, so no big victory there - any content from new creators is very rarely interesting. My (unproven) theory behind this is that since I started using Firefox and Duck Duck Go, the algorithm has been starved of data about my preferences (apparently, only Youtube search and view history is not good enough).