Several of the tactical mistakes were bade by Pedri, Yamal, De Jong also, the most lauded players here.
It's a systemic issue imo. Hell, causes can be multiple, maybe they put too much weight on their shoulders in this game vs PSG and it blew in their faces once they saw the reality of the match, and just how next level players like Vitinha, Hakimi, and Mendes were compared to us at reading the game. Not a nice feeling to have, I'm sure.
One thing's for certain, we need to regroup, stop with the self-gratifying bullshit, and go back to work. PSG demolished the same Inter we shipped 7 from. They are far above us atm and we need to cut the distance and improve. I know it's hard without a stadium, shitty home atmosphere, key injuries, and a thin squad, but that's what we have to do.