Lectures, lectures, lectures!! I search for niche topics, restrict to videos 20 mins or longer, sometimes throw a "lecture", "talk", "speech", "debate", "discus

Lectures, lectures, lectures!! I search for niche topics, restrict to videos 20 mins or longer, sometimes throw a "lecture", "talk", "speech", "debate", "discussion" etc tag into my search and watch those. There's a lot of amazingly dense insightful videos on youtube with <500 views. The only problem is that youtube is fantastically bad at making recommendations, their algorithm really only recommends the same speaker over and over again. I would actually say restricting to 20 min or longer videos is a real key. I was looking for some information on backpacking yesterday. I did a couple searches, restricted to long videos, watched a few pieces of several of them until I found one I really liked then dug into the channel that made it.