Camera Rotation and Zoom From select object

Can I get some help adding zoom and rotate from select object to this script, please

 using UnityEngine;
 using System.Collections;
 
 namespace JellyCube
 {
     public class CameraController : MonoBehaviour
     {
         public static CameraController Instance;
 
         public Transform m_LookAtTransform;
         
         public float m_LookAtDamping = 2f; //Damping of look at, when a object is selected;
 
         public float m_CameraMoveDamping = 2f; //Damping speed of the camera 'level complete' movement
 
         private const float INITIAL_CAMERA_HEIGHT = 50f;
 
         private Vector3 m_DefaultCameraPosition;
 
         private Vector3 m_LookAtTarget;
 
         private bool m_LevelComplete = false;
 
         void Awake()
         {
             Instance = this;
         }
 
         void Start()
         {
             m_DefaultCameraPosition = transform.position;
 
             //move the camera to the Initial Height position and lerp (on LateUpdate) to the m_DefaultCameraPosition
             transform.position += new Vector3(0, INITIAL_CAMERA_HEIGHT, 0);
         }
 
         void LateUpdate()
         {
             transform.position = Vector3.Slerp(transform.position, m_DefaultCameraPosition, Time.deltaTime * m_CameraMoveDamping);
 
             if (m_LookAtTransform != null && !m_LevelComplete)
             {
                 m_LookAtTarget = Vector3.Lerp(m_LookAtTarget, m_LookAtTransform.position, Time.deltaTime * m_LookAtDamping);
             }
             else if (m_LevelComplete)
             {
                 m_LookAtTarget = Vector3.Lerp(m_LookAtTarget, Vector3.zero, Time.deltaTime * m_LookAtDamping);
             }
 
             if (m_LookAtTransform != null)
             {
                 transform.LookAt(m_LookAtTarget);
             }
         }
 
         public void SetLevelCompleteCamera()
         {
             m_LevelComplete = true;
         }
 
     }
 }