Aaron Ramsey saw Arsenal's 3-0 loss at Everton as a result of their vulnerability on the counter-attack.
Ramsey made his first appearance for Arsenal since his injury on Boxing Day.
"We are really disappointed," said Ramsey. "It was a massive game - there was a lot riding on it but we conceded some sloppy goals. We were quite vulnerable on the counter-attack and they exploited the opportunities.
"I thought we started quite positively. We had a few attempts and got into dangerous positions, but you can't concede goals like that.
"We have to pick ourselves back up now. We have still got a lot of points to play for. We are in the semi-final of the FA Cup so we have got to put things right.
"We have to put a strong run-in together now. We have five games left and we will aim to win them all to give us the best opportunity to finish fourth or higher.
"I think Everton still have a few difficult games but then again every game is difficult in this league. So many teams can upset each other so we will have to be aware of that, concentrate on ourselves and just play for the remaining 15 points."
Via FourFourTwo