Hey, I’d advise you to try and do a very small project on a dedicated game engine, so you can get an idea of how they structure the data and why. In my case, I had a traditional education in programming, and when I first used Unity, it was really hard to understand the logic behind game objects and why they did it that way. Once it clicked though, it made sense, and if I had to do a custom game engine today I know I’d take inspiration from it. Could help you unlock your situation. In any case, don’t despair, as you had a great learning experience! People’s first game rarely get completed.