Ouroborus gang unite!
Having your previous snake become the new playfield was an awesome idea and fits the theme super well! I also really liked the idea of having fruits that make the snake grow multiple times.
I think one crucial thing you game is missing is having the snake become faster after each fruit (and reseting speed with the next snake). This would make for an really intresting risk-reward system as you would need to consider if you can handle more speed or need to cash out. With the snake always moving so slowly getting a good start currently feels more like a matter of patience