He made mistakes, particularly with regard to experience in defence. He knows that and he has addressed it.
Fortunately, you are not the owner; Simon Hallett knows that RL made mistakes last season and realises that that can happen to any comparatively new manager.
He now has a full season of experience in League 1, has made some shrewd signings, plans to give youth a chance if they are good enough and, although I cannot predict where we will finish, I am confident that it will be higher than last season and we certainly won’t concede 80 goals in this league.