Arsene Wenger says his team were “too nervous” in the opening stages of their 1-0 defeat at Manchester United on Sunday.
Robin van Persie's 28th-minute header was the difference between the two sides in a tight game with few clear-cut chances.
And the Arsenal manager was disappointed to not come away with at least a point after his side dominated possession in the second half.
"I nearly tend to say it's unfair because we put a little bit ourselves on the back foot in
"Maybe because we haven't won for a while here, we were just not ourselves in the first half"
the first half because we rushed our game and were too nervous," Wenger told Arsenal Player.
"When we started to play we dominated the game completely and were unlucky not to score in the second half.
"I hope that everybody's full of rage basically against ourselves because it's unbelievable to lose a game like that."
The defeat was Arsenal's sixth in a row at Old Trafford and Wenger believes that record may have been on the players’ minds going into the game.
"Maybe because we haven't won for a while here, we were just not ourselves in the first half. In the second half we should have come back - we were honestly unlucky," he said.