Well I was able to get a Bluetooth Controller to work with the game and that honestly improved the gameplay like tenfold for me.
I'd say for the most part on the right side the buttons feel too close together and clustered. It felt very mashy & just hoping for a response or the correct response.
I also think the colors could pop a little more. Maybe give users an opacity slider for the UI? 🤔
As far as actual adjusted arrangement. I don't think trying to describe in words is the best bet so I'm doing a simple edit from a screenshot.