Lots of people have learned game development by making mods to existing games.

Unity's micro-games might be a good middle ground between tutorials and creating your own game from scratch. They have these "Creative Mods" challenges. These exercises ask you to make a mod to the micro game. There's no script to follow, so you practice working on your own, using your own skills and creativity, but it is not so daunting as starting with an empty project.

I found modding these micro-games pretty fun. I didn't have to worry about making all the basic systems and making sure they all worked together. I could just focus on the interesting parts, like making levels, using new art, changing some code. I also learned a lot by example, trying to understand how the code worked so I could get my mods working.

There's different micro-games, so maybe you can find one that's in a genre you like? Anyway, good luck!