Arsenal manager Mikel Arteta was "extremely disappointed" with his team's performance on Monday following a 2-1 defeat to Everton.
Arsenal took the lead in the first half through Martin Odegaard's strike, but late goals from Richarlison and Demarai Gray condemned them to a second consecutive league defeat.
"I'm very disappointed. I think in the first half we were inconsistent with the ball ... we didn't have enough penetration or threat on the opponents' goal," Arteta said.
"One of the few times we did it we scored a goal from Martin and then in the second half we had to grab the game ... but again, in moments we were sloppy.
"We gave too many balls away too easily and encouraged them against the movement that they had in the press."
On poor finishing:
"The few times that we did break the press we were open on goal, but we have to do it much more consistently," Arteta added.
"We created four big, big chances, and when you don't put them in the net away from home it's very complicated to win the game, especially if you concede in the way that we did for example with the first goal."
Arsenal's next match is against Southampton on December 11.