For me it recommends exactly what I watch - I've never seen any recommendation for stuff I don't watch. The trouble seems to be it can't seem to find anything

For me it recommends exactly what I watch - I've never seen any recommendation for stuff I don't watch. The trouble seems to be it can't seem to find anything new. So if anything, I'd want it to branch out a bit and find semi-related stuff, but it doesn't. You're not the first person to complain about YouTube recommendations, and I don't know why my experience is so different than yours.