shutting down lobby

I'm trying to go back to the main menu screen when the game ends and have the lobby shutdown and all the clients leave I tried to have it on the on destroy but that doesn't work

this is what I have

Code (CSharp):

1.  public void GameFinish() {
2.     Debug.Log("game end");
3.     if (!IsServer)
4.     {
5.         GameFinishServerRpc();
6.         return;
7.     }
8.     Disconnect();
9.    
10. }
11.  
12. [ServerRpc(RequireOwnership = false)]
13. void GameFinishServerRpc()
14. {
15.     Disconnect();
16. }
17.  
18. public async void Disconnect()
19. {
20.    
21.     using (new Load("Finishing the game...")) {
22.        
23.         await MatchmakingService.LockLobby();
24.         NetworkManager.Singleton.SceneManager.LoadScene("Lobby", LoadSceneMode.Single);
25.        
26.        
27.     }
28.    
29. }
30.  
31.      public override async void OnDestroy() {
32.         base.OnDestroy();
33.         await MatchmakingService.LeaveLobby();
34.         if(NetworkManager.Singleton != null )NetworkManager.Singleton.Shutdown();
35.     }
36.  

 

Are you using the lobby service? Why not:

await LobbyService.Instance.DeleteLobbyAsync(lobby.Id);

or

await LobbyService.Instance.RemovePlayerAsync(lobby.Id, playerId);