Camera doesnt allow me to change its position / rotation (help)

I’ve made a camera script, but i changed the camera transform to a gameobject, to prevent it from shaking (friction), so far this has worked, but it has lead me to some problems. 1. I cannot changed the cameras position, 2. I cannot change its rotation (from the looking script), i somehow got around this but i completely forgot how i did it. The script i want to make for it is a shaking script, when theres an explosion, the camera shakes, or when your driving a vehicle. Heres my camera script.

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class CamLook : MonoBehaviour
{

    public bool canLook = true;
    public bool cursVis;
    public bool locked;
    public bool useSmoothSpeed;

    public float floatSpeed = 10.0f;
    public float value = 0.0f;
    public float currentXRot;
    public float currentYRot;
    public float xRot;
    public float yRot;
    public float vRotX;
    public float vRotY;
    public float vRotZ;

    [Range(1, 90)]
    public float clampDegreeUp = 90.0f;
    [Range(-1, -90)]
    public float clampDegreeDown = -90.0f;

    public float sensitivity = 8.0f;
    public float smoothDamp = 0.1f;

    public GameObject player;
    public Transform look;

    private void Start()
    {
        player = GameObject.FindGameObjectWithTag("Player");
        look = GameObject.Find("Camera_Transform").transform;
    }

    void Update()
    {
        MoveCamera();
        RotateCamera();
    }

    void MoveCamera()
    {
        if (useSmoothSpeed)
        {
            transform.position = Vector3.Lerp(new Vector3(look.position.x, transform.position.y, look.position.z), new Vector3(look.position.x, look.position.y, look.position.z), Time.deltaTime * floatSpeed);
        }
        else
        {
            transform.position = look.position;
        }
    }

    void RotateCamera()
    {
        if (canLook)
        {
            Cursor.lockState = CursorLockMode.Locked;
            Cursor.visible = false;

            value = 0.0f * Time.deltaTime;

            Vector3 vec = Vector3.zero;

            xRot -= Input.GetAxis("Mouse Y") * sensitivity;
            yRot += Input.GetAxis("Mouse X") * sensitivity;

            xRot = Mathf.Clamp(xRot, clampDegreeDown, clampDegreeUp);

            currentXRot = Mathf.SmoothDamp(currentXRot, xRot, ref vRotX, smoothDamp);
            currentYRot = Mathf.SmoothDamp(currentYRot, yRot, ref vRotY, smoothDamp);

            transform.rotation = Quaternion.Euler(currentXRot, currentYRot, 0);

        }
        if (!canLook)
        {
            Cursor.visible = true;
            Cursor.lockState = CursorLockMode.None;
        }
    }

}

Try
link text

very nice video tutorial about what your trying to do
( I was gonna type a script but I think you will learn more if you watch this video.)