Liverpool coach Arne Slott said he was not happy with his side's performance in the 1-0 win over Girona, which extended the Champions League leaders' perfect start to six games.
Mohamed Salah's 63rd-minute penalty – his 50th goal in the competition – was the difference, but it was not an easy one as the first half was particularly troubling for Slot.
“If you ask me about all six games, I'm really happy with all the results,” he said.
“I'm really happy with the five games and the way we played. I couldn't be happier with the performance we gave tonight.”
When asked what made him so unhappy, he added: “A lot. Especially two things.
“If you play against a team that has a good idea of football and knows how to get the ball out from the back like some of the other teams we've played recently, like (Manchester) City or Real Madrid, you have to be very strong if you want to make it difficult for them.
“But if you wait a few seconds at a time and then press, you will easily be outdone because this team can give you problems, and that's what they showed throughout the whole Champions League campaign, with the exception of the PSV Eindhoven away match.” .
“I almost feel sorry for them because this season they deserve a lot more than the three points they got now.
“And every time we lost the ball, we were not aggressive enough, and almost every time they went for our goal.
“We had no control over the game, the second half might have been better – I'm trying to be positive.”