Не влезло в вопрос . Вот тут код)
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using Photon.Pun;
using Photon.Realtime;
using UnityEngine.SceneManagement;
using UnityEngine.UI;

public class ConnectToServer : MonoBehaviourPunCallbacks
{
	public Slider loadingBar;

	void Start()
	{
		if (!PhotonNetwork.IsConnected)
		{
			UnityEngine.Debug.Log("Attempting to connect to Photon server...");
			PhotonNetwork.PhotonServerSettings.AppSettings.FixedRegion = "eu";
			PhotonNetwork.ConnectUsingSettings();
		}
		else
		{
			UnityEngine.Debug.LogWarning("Already connected to Photon server.");
		}
	}

	void Update()
	{
		if (loadingBar != null)
		{
			if (PhotonNetwork.IsConnectedAndReady)
			{
				loadingBar.value = 1f;
				UnityEngine.Debug.Log("Connected and ready!");
			}
			else if (PhotonNetwork.IsConnected)
			{
				loadingBar.value = 0.5f;
				UnityEngine.Debug.Log("Connected but not ready. Ping: " + PhotonNetwork.GetPing());
			}
			else
			{
				loadingBar.value = 0f;
				UnityEngine.Debug.Log("Not connected.");
			}
		}
	}

	public override void OnConnectedToMaster()
	{
		UnityEngine.Debug.Log("Connected to Master. Loading MainMenu scene...");
		if (SceneManager.GetSceneByName("MainMenu") != null)
		{
			UnityEngine.Debug.Log("MainMenu scene found, loading...");
			SceneManager.LoadScene("MainMenu");
		}
		else
		{
			UnityEngine.Debug.LogError("MainMenu scene not found!");
		}
	}

	public override void OnDisconnected(DisconnectCause cause)
	{
		UnityEngine.Debug.LogError($"Disconnected from Photon server: {cause}");

		switch (cause)
		{
			case DisconnectCause.Exception:
				UnityEngine.Debug.LogError("Exception error occurred.");
				break;
			case DisconnectCause.ServerTimeout:
				UnityEngine.Debug.LogError("Server timeout.");
				break;
			case DisconnectCause.ClientTimeout:
				UnityEngine.Debug.LogError("Client timeout.");
				break;
			case DisconnectCause.InvalidAuthentication:
				UnityEngine.Debug.LogError("Invalid authentication.");
				break;
			case DisconnectCause.MaxCcuReached:
				UnityEngine.Debug.LogError("Max CCU reached.");
				break;
			case DisconnectCause.DisconnectByServerLogic:
				UnityEngine.Debug.LogError("Disconnected by server logic.");
				break;
			case DisconnectCause.DisconnectByClientLogic:
				UnityEngine.Debug.LogError("Disconnected by client logic.");
				break;
			case DisconnectCause.InvalidRegion:
				UnityEngine.Debug.LogError("Invalid region.");
				break;
			case DisconnectCause.OperationNotAllowedInCurrentState:
				UnityEngine.Debug.LogError("Operation not allowed in current state.");
				break;
			default:
				UnityEngine.Debug.LogError("Disconnected for an unknown reason.");
				break;
		}
	}
}