I like the idea you ran with here - definitely one of the more unique takes on the spin to win theme! The core gameplay loop seems well established, but there are a few issues I'd like to point out:
- The visuals can get a little cluttered / confused. At times I found it difficult to discern between what was in the foreground and background. I recommend applying some global shadow filter (in some engines this means just putting a translucent black rectangle between the player's layer and the background layer) so that objects in the background are darker and easier to contrast with those in the foreground.
- Adding SFX for getting hurt would've helped me to realise when I got hit. Without it, I have to draw my attention away from the player and to the healthbar (health circle?) and readout at the bottom of the screen.
- The spawning of the coins (cogs?) were a bit unfair at times, sometimes spawning in places where it'd be near impossible to grab the coin without getting hit. Consider restricting coin spawning away from objects that can hurt the player to make them easier to grab.
Don't feel disheartened about the bad feedback though - this is a solid first submission! Keep at it!