king definitely was the most nerfed one there. queen lost his cyborg arm, but king lost his wing and blade. Specifically his blade that can snatch away other sword
Queen also lost his sword on Sanji's neck. And it seems King now lost both wings for some reason, or at least they're not in the picture.
But the most important thing he lost was Kaido. The source of his protection, safety, confidence and the only true friend he could count on.
King not only lost a fight (after some 30 straight years of never losing), he lost his home and his place in the world.
He is in mourning and mentally broken.
Even if he gave it all in the fight against Ryokugyu, it was not the same as when Kaido lived. He was only fighting for his life, not for some superior goal like making Kaido the Pirate King or something.
I'm sure the only ray of hope left for him at this point, is to return to his old dream of finding Joy Boy who will change the world for him the way he wished it in the first place. But even that must be an ambivalentic feeling, because whether or not he is aware that Joy Boy is Luffy, he is certain that Joy Boy killed Kaido. Will he not wish to avenge his captain? Complicated.