Object rotation as we see of the prefab in prefab window.

![alt text][2]Hi everyone, I am beginner in programming side and stuck in one place. I want to rotate my game object with mouse/touch. But I want to rotate it as we rotate our prefab while selecting it and rotate in the prefab window. I have written a script which rotates the object with X and y axis but it gets weird angle in the end due to which it is hard to reset it to its original position.

Thanks

Here is my script and the prefab window image:

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class Rotator : MonoBehaviour
 {
     public float rotationSpeedY = 2f;
     public float rotationSpeedX = 5f;
 
     //public float angleMinLimit, angleMaxLimit;
 
     Quaternion objRotationY, objRotationX;
 
     private GameObject myObject;
 
     //public float yRotation = 5f;
 
     private void OnMouseDrag()
     {
 
 
         objRotationY = Quaternion.AngleAxis(Input.GetAxis("Mouse Y") * rotationSpeedY, -Vector3.right);
 
         myObject.transform.rotation = myObject.transform.rotation * objRotationY;
 
         objRotationX = Quaternion.AngleAxis(Input.GetAxis("Mouse X") * rotationSpeedX, -Vector3.up);
 
         myObject.transform.rotation = myObject.transform.rotation * objRotationX;
 
     }