Aaron Ramsdale was in a sombre mood after our disappointing 2-1 defeat to Brighton at Emirates Stadium on Saturday afternoon.
Our goalkeeper reflected a frustrating performance in N5 and stressed the need to put things right next week against Southampton.
"It's not good enough," Ramsdale told Arsenal.com. "Two games on the spin where the first 45 minutes has got away from us. You make it an uphill battle against any team in the Premier League if you're losing at halftime.
"We were not in the rhythm of the game, that's unlike us, especially at home where we've normally started really well all season. It was a really poor performance and as I said we, went to the end but that's a given at any club, especially this club. When you give a team a step up in the Premier League it's always hard to get back in the game.
"One-nil down is tough enough, two-nil down in the Premier League is even harder, so if we'd have got the first goal back even earlier we might have pushed and pushed but there was too much to do in the end.
"This was supposed to be the reaction game but it wasn't. We've lost and not managed to pick up any points and next week is even bigger. I think we just need to go out there and be free and play our game, you know? It's a game of football and I think in the first half we were very tense and slow so we just need to go out there next week, trust what the manager and the coaching staff are saying and go and play our football, which we've done all season."
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