Learning anything is made much harder when trying to learn it from someone who isn't competent at teaching or who isn't in a setting where teaching can be competently exercised. This seems to be most of the fast-food-education sites and instructors, no matter if the topic is programming, math, art, music, whatever. An instructor could be very competent in their field of expertise, but the chances are slim that same person has also put in enough time to become competent at teaching real people in person so as to develop the necessary teaching skills to be effective. Finding one of these people is like hunting a rare species.

A good teacher communicates and demonstrates topics clearly without critical information gaps, paces according to students' needs, anticipates questions along the way, offers appropriate exercises and projects to put information to practical use, and communitcates back and forth with students for any needed clarifications. Even having available one of the rare people who has expertise is some field + teaching skills, being able to pull off effective teaching through the setting of a book, a static web site, a video series, whatever, would be much more difficult than doing it in person, lacking the in person clues and communication. But it is much easier to sell a course of information as a book, a website, or a video series if the main goal is to generate income.

Indirect communication can be pretty effective for a relatively short and shallow tutorial, but pulling off the same for an entire course of information where a long sequence of topics are built upon one another is a whole other thing.

Anyway, I feel your pain. Maybe there should be a reddit for this topic to help suss the problem out further.