Input.GetAxis("Mouse X") always return 0, using normal settings

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class MouseLook : MonoBehaviour
 {
     float horizontalSpeed = 2.0f;
     float verticalSpeed = 2.0f;
 
     void Update()
     {
         // Get the mouse delta. This is not in the range -1...1
         float h = horizontalSpeed * Input.GetAxis("Mouse X");
         float v = verticalSpeed * Input.GetAxis("Mouse Y");
         print(h + ", " + v);
         transform.Rotate(v, h, 0);
     }
 }

as you see, it is just a normal Mouselook script, however, the print value is always 0, 0 and the camera wont move, I've check the code and find out the Mouse X and Y are returning 0. I've search up the internet and not yet finding a solution. Help me pls ;-;