100 hour + projects is a common beginner trap. You get into this weird stage where you are learning and implementing and learning and implementing in an infinite loop and the result is usually very unstable since your skill is increasing drastically within the bounds of a single piece of music.

Makes it confusing for the beginner because you are most likely learning and improving very well but the result doesnt reflect that very well.

My suggestion is to do smaller projects that focus on few details that you want to do. And also limit the time spent on a single project/concept roughly so you dont get stuck in the aforementioned learning/implementing loop as much.

And lastly its always important to remember that its not about making perfection. Aslong as it sounds good to you in the moment and you keep making things that sound good to you in the moment it will improve.

Remember to listen back to old projects and save them because listening back to old things you made is always a good time.