Camera Movement

Sample code parts:

 void Drag()
     {
         xAxis += Input.GetAxis("Mouse X") * xSpeed;
         yAxis -= Input.GetAxis("Mouse Y") * ySpeed;
     }

 void UpdatePosition()
     {
         transform.position = CalculatePosition(yAxis * ySpeed, xAxis * xSpeed, zoomDefault);
         transform.LookAt(target);
     }

 Vector3 CalculatePosition(float rotationX, float rotationY, float distance)
     {
         Vector3 direction = new Vector3(0, 0, -distance);
         Quaternion rotation = Quaternion.Euler(rotationX, rotationY, 0);
 
         return target + rotation * direction;
     }

The problem is, I can drag just fine with that, but if I want to change the camera position without changing the target position, like, and still work on the same object. How do I do that?