private IEnumerator SpawnAndDestroyEnemy(Vector3 pos)
{
    GameObject go = GameObject.CreatePrimitive(PrimitiveType.Sphere);
    go.transform.position = pos;

    yield return new WaitForSeconds(1);

    Destroy(go);
}

private void SphereIndicator(Vector3 pos)
{
    GameObject go = GameObject.CreatePrimitive(PrimitiveType.Sphere);
    go.transform.position = pos;

    Destroy(go,1f);
}