Q: (Btw I've chosen reaper for a DAW, because people said it's good and it's nice to trust them) thanks!
A: what i would recommend, in this case, and forgive me if you've heard me say this 10,000 times before, which i have, but my best advice for this situation which i recommend strongly is to start with extremely short pieces of music. Extremely short. like 3 seconds or less. because producing your own music from scratch is about as complicated as building a finished house that is ready for move-in. there are so many things and different categories of work and different departments you have to deal with, it seems impossible to learn to do all that stuff. Unless, your song was so absurdly short that it was literally impossible not to finish it