Congrats on beating the game! Glad you liked it :)
Now addressing the things u mentioned, I have actually tested many different camera settings, and this one turned out to be the best. The camera was very difficult to get right, especially since you're in a small cave, so the camera has to not clip through walls, but also show a big enough view for the player. With the camera moving without clicking, it feels much less controllable. I even had two playtesters (namely my dad and my sister lol) and they both prefered the system with clicking. It might feel like its uncomfortable, but it actually gives you control that is needed for such small caves. However, I should have hid the cursor whenever no menu is opened, but I simply didnt have enough time.
About the uranium, you are actually able to obtain it. In the help menu you can see that better miners can dig up better minerals. I believe that both automatic drill and excavator are able to dig it up sometimes. I wanted to make it a slightly exclusive item (and the atomic bomb is quite glitchy, it sometimes clips through walls if there is not enough space). I'm planning to add an extra information section on the itch.io page today, to clarify how some things work in the game.
Lastly, I know the song can get quite boring, and I didnt have enough time to find a few other ones, so I decided to allow the player to mute it in the pause menu instead. Sorry for that.
Anyways, thank you for the great feedback!