Camera is not showing anything when following player

so i have a 2D game and there is a camera, and the player moves, the camera follows it with a script. so if the script is off, it shows all the terrain, but if i turn on the script, it only shows the colour background, and none of the terrain and not the player.

this is the script:

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class offsetFollow : MonoBehaviour
 {
 
     public Transform followTransform;
     public Vector2 offset;
 
 
     // Update is called once per frame
     void FixedUpdate()
     {
         transform.position = new Vector2(followTransform.position.x + offset.x, followTransform.position.y + offset.y);
 
 
     }
 }
 

image of the camera settings (i just started making the game today, its a prototype)

and this is what the camera gives me in the game:

i checked the position of the camera in-game and it is following the player.

so what is the problem?

my OS: Windows 10 Unity version: 2020.3.13f1 my game is for Android