How can i implement Camera.ScreenToWorldPoint(); for the crosshair script?

Hello, i have a problem with my crosshair script, i want to implement Camera.ScreenToWorldPoint(); in it, so my crosshair will be able only to move where the camera is. But i can't figure out how it works.

The code: public Transform anchor; public float maxMoveRadius; public float sensitivity = 1f;

     Vector3 position = Vector2.zero;
 
     void Start () {
         
     }
     
     void Update () {
 
         Vector3 moveDelta = new Vector3(Input.GetAxis("Mouse X"), Input.GetAxis("Mouse Y"), 0);
         position = Vector3.ClampMagnitude(position + moveDelta * sensitivity, maxMoveRadius);
 
         transform.position = anchor.position + position; 
     }
 }

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