Yeah this definitely sounds headed in the right direction!
At this point, if it were my track, the main mix adjustments would be to make the bass louder and drop the volume of that that key/pad chord sound.
The drums sound pretty good, I think the open hat is a bit loud but it’s not a huge problem. I like that you changed up the drum pattern throughout though, that makes it more interesting. If it were me I might have a short section with just no drums at all, but that’s up to you.
All in all, I think some styles are more difficult to be successful with than others… from what I have seen, upbeat and happy tracks tend to sell the best on AudioJungle. With this track you’ve taken the exact opposite approach: very slow bpm, and moody/melancholy. So just keep that in mind, those factors are probably also taken into account when the reviewers look at your track. Not saying you can’t be successful with downtempo, melancholy music, but I think the production quality has to be pretty high for those tracks to be accepted and then do well.
Also your chord progression goes back and forth between the same 2 chords for the entire track, and not only that but the 2 chords are relative major/minor to one another. So basically there’s very little harmonic motion throughout the piece. Again, it’s possible to be successful with this, there are tracks out there with only a few chords that still do very well… but the production quality has to be really high for it to work.
Anyway those are just my thoughts, hope some of that helped!