theres nothing i can tell u other than practice. When u least expect it you're gonna be pretty good, it happened to me with piano playing. I was at that point where i felt i couldn't do it but then somehow got to practice with songs i liked and it got to a point where it was pleasing to hear and not just pressing random notes.
U just gotta analyze how things work, like what does this do and what this does and so on.
good luck on the journey my man. It costed me 9 years to get at a fair decent style. If I can, u can too ;)