object moves when rotating??? what is wrong with my code

using UnityEngine;

public class FollowPlayer : MonoBehaviour { public Transform player;

 public float mSens = 100f;
 public float yRotation = 0f;
 public float xRotation = 0f;


  void Start()
 {
     Cursor.lockState = CursorLockMode.Locked;
 }
 void Update()
 {
     transform.position = player.position;
     float mX = Input.GetAxis("Mouse X")*mSens*Time.deltaTime;
     float mY = Input.GetAxis("Mouse Y")*mSens*Time.deltaTime;
     yRotation -= mY;
     yRotation = Mathf.Clamp(yRotation, -90f, 90f);

    
     xRotation += mX;
     xRotation = Mathf.Clamp(xRotation, -90f, 90f);
     
     transform.localRotation = Quaternion.Euler(yRotation, xRotation, 0f);
     player.transform.localRotation = Quaternion.Euler(0f, xRotation, 0f);
     

 }

}