Thanks for the long feedback ! I agree that my game could use more feebacks and a better UI in general. I definitely would've added control mapping if I had had the time. If I happen to make a post-jam version (which I am considering but not sure to do), I definitely will work on this, and on the bugs you reported.
Thanks again, these feedbacks definitely help (and even if I don't make a post-jam version, I'll remember it for my future game :) )!