My camera follows my player so that the camera goes inside the player. What can I do?

My problem is that the camera goes into the player so that it only sees the background and not the player.

My script looks like this:

using UnityEngine;

public class Follow : MonoBehaviour { private Transform playerTransform;

 public float offset; 
   
  void Start()
 {
     playerTransform = GameObject.FindGameObjectWithTag ("Player") .transform;
 }

void LateUpdate() { Vector3 temp = playerTransform.position;

      temp.x = playerTransform.position.x;

     temp.y = playerTransform.position.y; 

     temp.x += offset;
     temp.y += offset; 

     transform.position = temp; 
 }

}