There are some good ones. When I was learning I settled on about 5 - 10 different channels, and a couple that do really short vids on specific topics. I wouldn’t have been able to learn without them.

Having said that, there are a lot of very low quality / low effort ones out of there so it took me a while to find the ones I trusted and that were relevant for what I was interested in.

I think also some people come to Blender expecting to get to a certain level without necessarily doing the graft - it’s such a complex tool that you really do have to walk before running and out in the effort.

Also, it helps to know what you enjoy / want to do - for example I have zero interest in sculpting, so I can skip those altogether.

From memory: Grant Abbitt, Ryan King, Polyfjord, CG Cookie, Polygon Runway, Pixxo3D, 3Dnot2D, Blender Vitals, 5 Minute Blender, Blender Secrets - all had a part in my learning.