// Start is called before the first frame update
    private void Start()
    {
        GameObject lobbyCanvasObj = MainCanvasManager.instance.lobbyCanvas.gameObject;

        if (lobbyCanvasObj == null)
        {
            return;
        }

        LobbyCanvas lobbyCanvas = lobbyCanvasObj.GetComponent <LobbyCanvas>();

        Button button = GetComponent <Button>();

        button.onClick.AddListener(() => lobbyCanvas.onClickJoinRoom(roomNameText.text));
    }