public class State1 : StateBase
{
    public override async UniTask<StateTransitionInfo> Execute(CancellationToken token)
    {
        Debug.Log("State1");
        await UniTask.Yield();
        return Transition.GoTo<State2>();
    }
}

public class State2  : StateBase
{
    private static bool wasPerformed = false;

    public override async UniTask<StateTransitionInfo> Execute(CancellationToken token)
    {
        Debug.Log("State2");
        await UniTask.Yield();
        var state = wasPerformed ? Transition.GoBack() : Transition.GoTo<State3>();
        wasPerformed = true;
        return state;
    }
}

public class State3 : StateBase
{
    public override async UniTask<StateTransitionInfo> Execute(CancellationToken token)
    {
        Debug.Log("State3");
        await UniTask.Yield();
        return Transition.GoBack();
    }
}

Debug.Log("State machine initialized");
await _stateMachine.Execute<State1>(cts.GetRenewedToken());

SceneManager.LoadScene(SceneManager.GetActiveScene().buildIndex, LoadSceneMode.Single);