Please give us a way to bind the camera rotation to something other than the center mouse wheel and unlock the Z axis for it.
Right-Click or even CTRL click to rotate camera is way more ergonomic, whereas center mouse is like a constant ray of enfeeblement for my index finger.
I can't tell from your post if you are playing through Steam or Stadia. If Steam, then you can change the bindings. I have my camera rotation bound to my right click (Toggle Camera Rotate option.) Can't help you with the Z axis unfortunately, wish they would do something about it as well.