How to know whos winner

Bürküt

Hello I wrote this script to know who won and lost. Basically there are 2 main units, if one of them dies owner of that unit loses the game. but somehow this isnt working.

 GameObject loserPanel;
    GameObject winnerPanel;
    Combat enemyComat;  
 void Start()
    {
        photon = GetComponent<PhotonView>();
        isDeath = false;
        animator = GetComponent<Animator>();
        stats = GetComponent<StatsHolder>();
        dmg = 10+((float)stats.level*1.25f);
        loserPanel = GameObject.FindGameObjectWithTag("LoserPanel");
        winnerPanel = GameObject.Find("Canvas/WinnerPanel");
    }

 private void OnTriggerEnter(Collider other)
    {
        if (other.tag == "Player"||other.tag=="PlayerM")
        {
            if (enemyComat = null)
            {
                enemyComat = other.gameObject.GetComponent<Combat>();
            }
            other.gameObject.GetComponent<PhotonView>().RPC("Combat1",RpcTarget.Others,dmg);
        }
    }  
  void Update()
    {
        if (isDeath)
        {
            Destroy(gameObject, 3);
        }
        if (this.tag == "Player11" && isDeath == true)
        {
            Debug.Log("You lost");
            loserPanel.SetActive(true);

        }
        if (enemyComat != null)
        {
            if (enemyComat.isDeath == true)
            {
                Debug.Log("YouWon");
                winnerPanel.SetActive(true);
            }
        }
    }