You arent wrong. We had so much fucking time for this appointment and we end up with just an equally shit manager as Mourinho.
But I'd still try to get somebody who actually plays football. Valverde, Kovac, R. Schmidt, Bielsa, Potter, Rangnick, Löw and to some extent Ten Hag (because of Ajax strength in the domestic league). Of course, not everyone from these would be interested. But nobody can tell me we wouldn't have a chance trying to sign one of them.
Nuno is just another manager in a long list of managers, which dont seem to have any idea, tactics and evolution in their coaching. Mourinho, Ancelotti, Southgate, Martinez, Ranieri, Hodgson, Gattuso, Allardyce, Benitez, Allegri, de Boer... the list goes on. Its just my opinion, these coaches are in top football by alot of luck and connections.