On the education side, my first 3 years as a maker, I didn't grow beyond 1 paid user on any product I sold. I still learned with every failed launch, and every product I shut down.
See "Year in review" at https://maxrozen.com/
The learning has been cumulative.
I went from "Hey if I just copy Pieter Levels, I'll be rich immediately" to "If I build it, they will come" to "Maybe if I write about the problem, people will come?" to "If I talk to people about their problems, maybe I'll understand them well enough to solve a problem for them".
I'm not trying to convince you to take up the life of a bootstrapped founder, I just wrote an article about what I learned from a couple spare hours before my job each day over the last 12 months.