Really love the aesthetic and had a lot of fun playing!
One thing I would change is to add acceleration to the movement, doesn't have to be slow to accelerate either, in fact this game would work well with a fast acceleration. It would feel really nice in my opinion. Going from 0 to max speed in one frame makes it feel jittery and prevents micro adjustments. I used it in my game if you want a point of reference to compare how it feels. (Maybe hard to see somewhat due to moving camera tho)
I really enjoyed playing yours tho, well done!