The fundamental problem is the "everyone should go to university" model combined with the denigration of books in favor of electronic media. So instead of the students having carefully vetted texts, they have sloppily produced videos and notes. The result is ever more poorly trained graduates going out to train even more poorly trained graduates. It's become a scam for the benefit of the faculty and staff.
Moreover, some people don't know the subject well enough to actually teach. I enrolled in an upper division graduate level electrostatics class. The 2nd or 3rd meeting the instructor was deriving the equations for a charged particle in free space. He was referring to his notes the whole time which is always a bad sign. At one point he wrote out an equation which I didn't understand where it had come from. So I asked him how he got that from the previous equation. "Oh, that's the way you do it." After sitting in stunned silence for a few minutes I figured out that the transition was via a trig substitution. I didn't need the course for anything. I just picked it because it looked as if it would be interesting. So after class, I went directly to the admin office and dropped the class. I did not get my doctorate because of a personality conflict that arose with my supervisor. But a classmate who did not know Snell's law did get his. I seem to recall he did a post doc at Stanford before finding a job.
The object of education is to convey the logic of the topic. This guy was just writing his class notes on the board. This was 30 years ago at UT Austin which is very highly ranked school. I rather fear there are many more, even worse, examples now.
From your comments, you should definitely get a copy of "The Art of Electronics" and read it cover to cover a couple of times. Don't bother with the problems on the first reading. That's just for surveying the territory. On the 2nd reading work selected problems and build circuits that interest you. Keep it all in a notebook with a sewn binding. There's a lab manual for AoE, but I read that it is poorly edited and full of errors. Read a bunch of articles Jim Williams and Bob Pease wrote for EDN and other trade magazines. Especially read, "Max Wien, Mr. Hewlett and a Rainy Sunday Afternoon".
Collect a personal library covering the material. For example, get 2-3 books on op amps, 2-3 on network analysis, etc. Look for books referenced by other books, especially H & H. I used to visit 3 used books stores every weekend when I lived in Dallas. Over the course of 10 years I built a very good library doing that. It's still a significant investment, but I've made my money back many times over. The reason for multiple books is everyone leaves something out or bungles an explanation. If you watch a really good professor as I have had the privilege of doing, they will cover the same thing from multiple few points during their presentation.
The ultimate goal is not to know the answer. No one can remember everything. The goal is to be able to find the answer to whatever questions come along.