I loved it! I would not decrease the rotation (maybe you did it already in the meantime?), it is challenging and fun. Sounds are great!
There are so many videos about game dev and difficulty. You could do it like some games do: finishing the game is rather easy and doable, but collecting all coins / stars or whatever to unlock a secret level for example is hard..?
BTW, I am not at home, so i played on my phone. Finished level 9, but not 10 😅 I think you are just one speedbutton away from being mobile friendly 😁👍 Good job!