Platform move left and right randomly

Hi, I am pretty new to Unity and I am trying to make a platform jumping game. I got this script working as it should from a Youtube video but I wanted to make the platform move randomly because I have multiple platforms that gonna spawn when I start the game. So basically when the platform spawn 1 should go from left to right and the other should go from right to left.

Code (CSharp):

1.  
2.     public Transform pos1, pos2;
3.     public float speed;
4.     public Transform startPos;
5.  
6.     Vector2 nextPos;
7.  
8.     // Start is called before the first frame update
9.     void Start()
10.     {
11.         nextPos = startPos.position;
12.     }
13.  
14.     // Update is called once per frame
15.     void Update()
16.     {
17.         if(transform.position == pos1.position)
18.         {
19.             nextPos = pos2.position;
20.         }
21.         if(transform.position == pos2.position)
22.         {
23.             nextPos = pos1.position;
24.         }
25.         transform.position = Vector2.MoveTowards(transform.position, nextPos, speed * Time.deltaTime);
26.     }