Pirlo didn't fail at Inter either. He couldn't break into the team. Locatelli had like 50 appearances over a couple years at Milan, and he was in their youth team.
He had spells in the game where he looked like a player but anyone as slow as him is going to get constantly exposed in a game like that, he can't recover against direct running from deep.
I did notice that he won many tackles. To be fair, his defensive work is good. But his passing... he is so slow to make a pass and lacks any creativity. His "progressive passes" are spreading it out to the wings for Yildiz or Chico