I'm not very good with tips on composition and music theory, but I think thats probably what you should try to learn a bit about
Many notes sound kinda placed at random and there's nothing wrong with total randomness in music, but if you're trying to convey a specific emotion then it probably wont work.
After listening back a few times I think you composed with each instrument separately and then layered them all together, but since they're all using different scales thats probably why it sounds very random?
Anyway, I think you should try to watch some videos about scales, chords and chord progressions