You have a very different experience than I do! My Youtube algorithm suggestions are wonderful, full of science and engineering and history and food and travel and comedy and all kinds of weird esoteric things that would never have been viable in the broadcast TV I grew up with. I am literally delighted.

Maybe you're starving the algorithm and it's trying random things? Look up how to reset the YT algo, I'm sure it's possible. Then try subscribing/liking a few things that you actually like.

If you're within a standard deviation or two of the typical HNer, look up "Practical Engineering" and like a few of his videos. That should get you started.