Scene change don't working

if (MapManager.Qualified >= 4 && IsDeath == true && AlreadyExecuteAnim == false)
{

            SerialNumberDisplay.SetActive(false);
            AlreadyExecuteAnim = true;
            Music1.Stop();
            Music2.Stop();
            Music3.Stop();
            Music4.Stop();
            RoundOverSound.Play();
            RoundOverUI.SetActive(true);
            MapManager.Winner = "Bot" + Random.Range(1, 100000);
            MapManager.RoundQuery = "Qualified, Qualified, Eliminated";
            StartCoroutine(Eliminate());
        }
.... some code here


    public IEnumerator Eliminate()
    {
        Debug.Log("Change Screen");
        yield return new WaitForSeconds(3);
        Debug.Log("Changing screen...");
        EliminateSound.Play();
        EliminateUI.SetActive(true);
        yield return new WaitForSeconds(4);
        Debug.Log("Change!");
        SceneManager.LoadScene("WinScreen");
    }

The game don’t change the scene, how i can fix?

did you import UnityEngine.SceneManagement?