Arsenal midfielder Alex Oxlade-Chamberlain believes the Gunners could have done more on Tuesday in the Champions League.
Arsene Wenger's side were easily beaten by Borussia Dortmund at the Signal Iduna Park with the Englishman saying Ciro Immobile's late goal in the first half was a big blow for the Gunners.
"If you're not playing very well, the one thing you don't want to do is concede a goal [when we did], especially if you've managed to go 45 minutes of not playing too well but not conceding," Oxlade-Chamberlain told Arsenal Player.
"[Half-time] would have been a chance for us to regroup because we would have been in the game at 0-0, still right in the game.
"We needed to see it out but we didn't and that obviously gave them a big lift going into the second half.
"We knew we had to come out and play better than we did in the first half and in parts we did, but at the same time we left ourselves exposed to their counter-attack and that's how they scored their second goal.
"It wasn't how we wanted to perform here by any stretch of the imagination and it's a bit disappointing because we felt we had a good chance on a nice pitch."
The 21-year-old was full of gratitude for Arsenal's travelling support and says the Gunners will now shift their focus to Saturday's tricky away trip to Villa Park.
"We had so much great travelling support as well," added the midfielder.
"We feel that we've let them down a bit but we're going to bounce back from this and we need to put it right in the next game against Dortmund at home, and definitely in the coming [Champions League] games."
