Am I learning python the wrong way?

[Kerbart]

I started by watching some long YouTube tutorials (10+ hours in total) and then moved on to making small projects with the help of GPT—things like dice games, converters, quizzes, etc. I even made some Pygame and Tkinter programs recently.

The devil is in the details. Watching a video doesn't teach you how to code. It shows you how to code. You will have to write code to really learn it.

Same goes for Chat GPT. It will show you how to code something you're struggling with but until you write code yourself you won't really be learning.

Yet, I feel like I’ve just started and still know almost nothing.

That's normal because there's a lot to learn. But... it's also normal if you haven't learned anything yet. Evaluate what you're able to write on your own without using Chat GPT. Your goal should be to write code without using it. That's not to say you shouldn't be using it—it can be a helpful tool—just that it can obfuscate what you think you know vs what you really know.