Okay, hear me out. I can make feedback for this game, but it might be a bit harsh. If you still want to read, here:
Use better music.
Disable Sprite Smoothing so pixels actually look like pixels.
Use better mechanics/code implementations.
Improve the acceleration, deceleration and jump speed by shortening them.
Make slightly more colorful buttons, these are too dull.
I'm sorry if this is too harsh, but this is in full honesty. Your game can be muuuuuch better. If this is a first try though (or y'all are new to game dev entirely), then it's okay.
Sorry again.