Somehow counter in c# unity script adds 2 instead of 1

I have this piece of code which detects when the wall passes the player, and increases the counter. For some reason, the chunk sometimes stays in the same position twice, adding to the counter twice. I think there is nothing wrong, and the problem is in Unity itself.

for (int i = 0; i < SpawnedChunks.Count; i++)
{   
    float playerX = Player.transform.position.x;
    float chunkX = SpawnedChunks[i].bot_wall.position.x;

    if (chunkX < playerX && chunkX > -4.5f && GameObject.Find("player"))
    {
        PassedChunks.Add(SpawnedChunks[i]);
        PointsCounter.PointsCount++ ;
    }
}

>Solution :

Since you’re using a Rigidbody to move the walls, you have to place this loop inside of FixedUpdate, instead of Update.

Anything that relies on the physics system (or the results of the physics system) needs to run inside of FixedUpdate. The physics system runs at a set interval (ex. 60 times a second), while Update runs once a frame, which can be higher or lower than 60 times a second. This is why the position only didn’t update occasionally, it depends on the ever-changing framerate of your game.