Player follow

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

public class PlayerFollow : MonoBehaviour {

    public Transform PlayerTransform;

    private Vector3 _cameraOffset;

    private GameObject Player;

    [Range(0.01f, 1.0f)]
    public float SmoothFactor = 0.5f;

    public bool LookAtPlayer = false;

    // Use this for initialization
    void Start ()
    {
        _cameraOffset = transform.position - PlayerTransform.position;
    }

    // LateUpdate is called after Update
    void Update () {
        if(PlayerTransform == null)
        {
            Player = GameObject.FindGameObjectWithTag("Player");
            PlayerTransform = Player.GetComponent<Transform>();
            _cameraOffset = transform.position - PlayerTransform.position;
        }


        Vector3 newPos = PlayerTransform.position + _cameraOffset;

        transform.position = Vector3.Slerp(transform.position, newPos, SmoothFactor);

        if (LookAtPlayer)
            transform.LookAt(PlayerTransform);

    }
}