Input does't work at all for me

I have am trying this code with default input manager settings. It is attached to a game object with no other components in scene. Its Camera field is setted to default camera in the scene. Each input function returns false/0 no matter what I try. Even Input.anyKeyDown never returns true.

     public class KeyboardController : MonoBehaviour
     {
         public float YMin = -100;
         public float YMax = 100;
         public float XMin = -100;
         public float XMax = -100;
 
         public float XSpeed = 1;
         public float YSpeed = 1;
 
         public float MouseXSpeed = 1;
         public float MouseYSpeed = 1;
 
         public GameObject Camera;
 
         public void Update()
         {
             var pos = Camera.transform.position;
             var x = pos.x;
             var y = pos.y;
 
             if (Input.GetKeyDown(KeyCode.Mouse1))
             {
                 x += MouseXSpeed * Time.deltaTime * Input.GetAxis("Mouse X");
                 y += MouseYSpeed * Time.deltaTime * Input.GetAxis("Mouse Y");
             }
             else
             {
                 x += XSpeed * Time.deltaTime * Input.GetAxis("Horizontal");
                 y += YSpeed * Time.deltaTime * Input.GetAxis("Vertical");
             }
 
             if (x < XMin)
                 x = XMin;
             else if (x > XMax)
                 x = XMax;
 
             if (y < YMin)
                 y = YMin;
             else if (y > YMax)
                 y = YMax;
 
             Camera.transform.position.Set(x, y, pos.z);
         }
     }