Unity player look at mouse

private void Update()
    {
        Vector3 mousePos = Input.mousePosition;
        mousePos.z = 5.23f;

        Vector3 objectPos = UnityEngine.Camera.main.WorldToScreenPoint(transform.position);
        
        mousePos.x = mousePos.x - objectPos.x;
        mousePos.y = mousePos.y - objectPos.y;

        float angle = Mathf.Atan2(mousePos.y, mousePos.x) * Mathf.Rad2Deg;
        transform.rotation = Quaternion.Euler(new Vector3(0, 0, angle - 90));
    }

Source: grepper.com

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