Trying rotate and drag 2D Object with mouse

I have made the 2d object function move, but when I add the rotation function, if the object is moved then the object will move and rotate.
Can anyone provide a solution for that?

this the function (this used button to drag and rotate,I want to use the mouse)

public void OnDrag(PointerEventData eventData)
{
//Debug.Log("OnDrag");

string a = Itext.text.ToString();
print(a);

if (a == "Rotasi")
{


float roty = Input.GetAxis("Mouse Y") * rotSpeed * Mathf.Deg2Rad;
float rotx = Input.GetAxis("Mouse X") * rotSpeed * Mathf.Deg2Rad;


transform.Rotate(Vector3.up, roty);
transform.Rotate(Vector3.right, rotx);
}
else
{
rectTransform.anchoredPosition += eventData.delta / canvas.scaleFactor;
}
}