It must be a coincidence that the fewer Italians we have on the team, the worse the results are.
It's not about nationality anyway. What we need are players who understand what it means to play for Juve. Look throughout our history: we always had squads consisting of only a few truly world class players, complemented by useful squad players who had that Juve spirit. With usually only a minor part of the squad being just random players.
What we have now is 0 world class players. And, give or take, maybe 5 who (could) embody what Juve is supposed to be. Now, the vast majority of the current squad are just random players. And, to top it off, they're being coached by an incompetent & stubborn nobody.
And I'm afraid things are going to get worse before they get better.