Im trying to implement steam multiplayer to my game and im having an issue with player spawning.
Currently I can create and host lobby and other players can join, but when i spawn player its spawned only on that client. Im using player input manager for player spawning.

Here is all i have right now:

using UnityEngine;
using Mirror;
using Steamworks;

public class SteamLobby : MonoBehaviour
{
    protected Callback<LobbyCreated_t> LobbyCreated;
    protected Callback<GameLobbyJoinRequested_t> JoinRequest;
    protected Callback<LobbyEnter_t> LobbyEntered;

    public ulong CurrentLobbyID;
    private const string HostAdressKey = "HostAddress";
    private CustomNetworkManager manager;

    private void Start()
    {
        if (!SteamManager.Initialized) { return; }

        manager = GetComponent<CustomNetworkManager>();

        LobbyCreated = Callback<LobbyCreated_t>.Create(OnLobbyCreated);
        JoinRequest = Callback<GameLobbyJoinRequested_t>.Create(OnJoinRequest);
        LobbyEntered = Callback<LobbyEnter_t>.Create(OnLobbyEntered);
    }

    public void HostLobby()
    {
        SteamMatchmaking.CreateLobby(ELobbyType.k_ELobbyTypeFriendsOnly, manager.maxConnections);
        manager.StartHost();
        manager.ServerChangeScene("LobbyRoom");
    }
    private void OnLobbyCreated(LobbyCreated_t callback)
    {
        if (callback.m_eResult != EResult.k_EResultOK) { return; }

        Debug.Log("Lobby created succesfully");

        SteamMatchmaking.SetLobbyData(new CSteamID(callback.m_ulSteamIDLobby), HostAdressKey, SteamUser.GetSteamID().ToString());
    }

    private void OnJoinRequest(GameLobbyJoinRequested_t callback)
    {
        Debug.Log("Request to join lobby");
        SteamMatchmaking.JoinLobby(callback.m_steamIDLobby);
    }

    private void OnLobbyEntered(LobbyEnter_t callback)
    {
        CurrentLobbyID = callback.m_ulSteamIDLobby;

        if(NetworkServer.active) { return; }

        manager.networkAddress = SteamMatchmaking.GetLobbyData(new CSteamID(callback.m_ulSteamIDLobby), HostAdressKey);

        manager.StartClient();
    }
}

How can i sync object spawn, or should i completely remake player spawn. If u know any good source or some documentation for steam multiplayer could u please share, so i can learn how to implement it.