Thumbstick responsivnees

in my karts game i want to make that mobile joystick to be more responsive i mean that sometimes u need to put the move the joystick at a specific position to make the car steer and this affects the gameplay

VIDEO:

u can try the game byyourself on mobile and u will notice is hard to drive the car:

in summary: i want the car steer according to the joystick or at least the direction of the humanoid in which is trying to move. should i use humanoid.moveDirection? and if yes how?