I use newpipe, freetube instead of youtube.
It has everything but the discoverability that youtube provided.
I would atleast like a way to find new channels based on the channels I subscribe, if not new videos based on watched videos.
Need suggestions.
Same problem, interested in the solutions. Using a combo of Grayjay, like new pipe in which I have to subscribe to channels I already know, and YouTube.com in Firefox with sponsor block, specifically for the recommendation engine.