How to make a random moving enemy move with the Camera[Doodle Jump like game]?

ENEMY FOLLOW --

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4.  
5. public class EnemyFollow : MonoBehaviour
6. {
7.     public Transform enemy;
8.  
9.     void Update()
10.     {
11.         if(enemy.position.y > transform.position.y){
12.  
13.             Vector3 newPos1 = new Vector3(transform.position.x, enemy.position.y, transform.position.z);
14.             transform.position = newPos1;
15.         }  
16.     }
17. }

ENEMY --

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4.  
5. public class Enemy : MonoBehaviour
6. {
7.     public float speed = 1.5f;
8.     public float rotateSpeed = 5.0f;
9.     Vector3 newPosition;
10.     bool isMoving = false;
11.    
12.     public GameObject player;
13.  
14.     void Start ()
15.     {
16.         PositionChange();
17.     }
18.     void PositionChange()
19.     {
20.         newPosition = new Vector2(Random.Range(-5.0f, 5.0f), Random.Range(-5.0f, 5.0f));
21.     }
22.  
23.     void Update ()
24.     {
25.         if(Vector2.Distance(transform.position, newPosition) < 1)
26.             PositionChange();
27.         if(LookAt2D(newPosition))
28.             transform.position=Vector3.Lerp(transform.position,newPosition,Time.deltaTime*speed);
29.     }
30.     bool LookAt2D(Vector3 lookAtPosition)
31.     {
32.         float distanceX = lookAtPosition.x - transform.position.x;
33.         float distanceY = lookAtPosition.y - transform.position.y;
34.         float angle = Mathf.Atan2(distanceX, distanceY) * Mathf.Rad2Deg;
35.      
36.         Quaternion endRotation = Quaternion.AngleAxis(angle, Vector3.back);
37.         transform.rotation = Quaternion.Slerp(transform.rotation, endRotation, Time.deltaTime * rotateSpeed);
38.         if(Quaternion.Angle(transform.rotation, endRotation) < 1f)
39.             return true;
40.         return false;
41.     }
42.     private void OnTriggerEnter2D(Collider2D collision) {
43.  
44.         Destroy(collision.gameObject);
45.     }
46. }
47.