private void LoadArena()
    {
        StartCoroutine(LoadArena("FirstArena"));
    }

    IEnumerator LoadArena(string arenaName)
    {
        int k = 0;
        AsyncOperation op = SceneManager.LoadSceneAsync(arenaName, LoadSceneMode.Additive);

        print("Started Loading operation!");

        yield return new WaitUntil(op.isDone);
    }