I'm not sure there's a ton of real full programs on YouTube that would really leave you with, say, a college level understanding of something. No doubt there's some, but it's def not the norm. Even for those courses you lack the ability to interact with the instructor.
Learning on YouTube 10 yrs ago meant supplementing your guitar skills cuz you didn't have a teacher. Or learning how a compressor works so you can use it yourself in music. It was always supplemental tidbits from numerous creators that helped me hone skills. Learned a ton about tools and woodworking too, but it was always me working for awhile then going back to get more information. Much more difficult to do in like, biology(probably don't have a bio lab) or a high risk repair like plumbing.
Pretty much any computer skill is going to have a cache of resources where filtering out trash is going to be the harder part. There are fantastic coding and modeling guides from very experienced people. Most financial things you should be very wary of except top professionals with proven credentials.
Asking a community who their favorite creators are can be a good place to start.
I bought one 14 part video course and the resources/assets it had were more valuable than the info. I exercise caution with that stuff now.
And I entirely agree YouTube asks too much for premium.