Hector Bellerin says we will need to learn lessons and stop "losing against ourselves" after dropping three points at Wolves.
A sparkling first-half performance should have earned us a comfortable lead at Molineux, but a red card and penalty pegged us back on the stroke of half-time.
Bernd Leno followed David Luiz off the pitch in the second half and Bellerin knows it would have been a different story with a full complement of players.
"One hundred per cent [we've had too many red cards]," he said.
"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."
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