The UI is honestly fine overall just wanted to share what i noticed :).
In regards to more player agency, not to needlessly plug my own game but I added a mechanic where you spin your cursor around in the opposite direction to slow down the wheel during a spin. (though people have a really hard time understanding that mechanic in my game 😭)
For your game if you wanted to give more direct control I imagine something like rapidly pressing spacebar slows down the wheel slightly, and the faster you press the more you slow it down. So you can nudge the result if you get good and judging the spin and how fast to slow it down. But also i assume your wheel decides the result as soon as it starts spinning?
