First person sensetivity

The character’s camera is too sensitive in the center. It needs filters or non-linear input, sometimes it is difficult to make small adjustments on the gamepad. Inside the cockpit of the aircraft, the sensitivity of the camera works perfectly, and it is necessary to transfer this principle to the character’s camera.

I know that it is possible to adjust the overall sensitivity of the camera for a character. I’m talking specifically about the central sensitivity.
Small stick movements should be less aggressive.