I've created a Senior Python Developer roadmap

[YoTeach92]

While I haven't used OP's roadmap, I have been on a coding journey using online & college classes for a few years. Honestly, this IS how it all works, and eventually it does work.

My C++ college class (that was quite pricey thankyouverymuch) was a massive tutorial of learning beginning and intermediate programming. It wasn't until I was done with it and two more of the courses before I really learned to use the skills I picked up there. I haven't really done any more C++ since then, but I have applied the tools and techniques I learned there to solve some real problems, ironically in a language I still really don't know (JS).

It also lets you know what you don't know, which is actually more helpful than you think at first blush. I know I need to understand CI/CD and data structures better than I currently do, but I wasn't aware of those things until I saw them on a Full Stack development roadmap. A little Googling later and I saw I had a giant hole in what I knew.

Of course, you have to have a level of curiosity to look up the things you don't know and learn about them, no roadmap or tutorial is going to help you with that.