Jurgen Klopp has admitted that Liverpool need to ‘defend much better’.
West Ham ended the Reds’ record-equalling unbeaten run of 25 matches in all competition before this month’s international break with a 3-2 reversal.
Several of the goals at the London Stadium mirrored a pattern in other games where Klopp’s side conceded, notably against Atletico Madrid and Brighton.
And the Liverpool manager is under no illusions that his players have room for improvement in snuffing out attacks ahead of Saturday’s visit of Arsenal.
“The goal I hated most was the counterattacking goal because we have to defend it much better,” conceded Klopp.
“The other two goals were set pieces and the second set piece was extremely well taken and extremely well executed.
“But the first goal is a foul and the second goal we have to defend better.
“This bit of aggression, we can show more. There are things we can improve. That is what we knew before and we saw that again.”
He added: “There is a bit of a pattern but they were all still different. What we did was lose challenges in very decisive areas.
“For example, against Atletico we lost the challenges twice, especially for the [second] Antoine Griezmann goal when Joao Felix was in the half-right space.
“The decisive mistake was that we outnumbered him in that area. We had at least two, maybe three, players and he still came out.
“That is the problem with pressing – you invest a lot on the player on the ball.
“But you should win the ball otherwise you are in a worse position than you would be if you man-mark.
“(Leandro) Trossard was a bad one again. Decisive challenge in the box – we could have defended better. There are patterns, but they are different.
“We have to improve in that area. We know that. We scored an awful lot of goals, but we conceded too many as well.”