Arsenal full back Hector Bellerin feels the team is shooting itself in the foot too often this season.
The Gunners endured the misery of two red cards and a 2-1 away defeat to Wolves in the Premier League on Tuesday.
David Luiz got his marching orders in the second half, and goalkeeper Bernd Leno was sent off with his side already losing.
"One hundred per cent [we've had too many red cards]," Bellerin told reporters.
"We've shown that when we're 11 against 11 on that pitch, it's completely different. We had complete control in the first half and we probably should have been 2-0 up by the end of it. We paid for those mistakes.
"I always say that teams are not beating us, we are losing against ourselves. It's for us to learn. Hopefully this will be the last time. We were on such a good run, great momentum, great confidence in the team.
"We just need to forget this step because situations like this are not going to happen very often. We'll go on to the next one."
