I think there is a good idea here, it just needs to reach it's potential. For starters, the rhythm should be quantized with the vertical lines on your note grid to give the track more clarity. Adding drums here would be really beneficial here as well. Also, I don't know how familiar with BandLab you are, but if it gives you any trouble there are a lot of great free alternatives such as BeepBox or MuseScore (The latter is a bit of a learning curve if you're not familiar with instrumental music but it's very intuitive). I think a concise rhythm and drums would make this track pretty sweet!