We couldn't match their energy in the 2nd half. Their energy levels were superior (how could Diaz run like this?) and compensated for the inexperience of their younger/new players. People who judge football players or teams on paper are a bit clueless.
Let's be honest here. That was a really bad mistake by Ake, up there with Cancelo or even worse. He's a wonderful squad player, but no more than that. Imagine the comments if that was Gvardiol? Akanji has been the better player last and this season, but you would never guess it by reading this forum. Game of favourites.
Pep has to tweak the midfield. It's very difficult to make room for all of KDB, Foden, Haaland and Alvarez in big (!) games. We got a bit better with Kovacic and Doku. But we miss Gundogan. It's not easy to replace his intelligence, calmness and ability to score from midfield.