By Paul Brown
Paul Lambert promised that Villa will "pick themselves up and go again" as they look to bounce back from defeat to Everton.
The Toffees left Villa Park with all three points as goals from Steven Pienaar, Marouane Fellaini and Nikica Jelavic went in before half-time.
Karim El Ahmadi pulled one back after the break but it was just a consolation.
Lambert was pleased with the way Villa "kept going" in the second half, even in the face of Ciaran Clark's red card, but admitted it was a case of "after the horse has bolted."
He said: "You have to react and pick yourself up. There's another game on Tuesday so you have to pick yourself up.
"I was really disappointed. You can't, in any game of football, give someone a couple of goals start, particularly a team like Everton. You can't do it.
"The only pleasing thing was the second half. We kept going which was pleasing but the horse has bolted."
Lambert dismissed suggestions Villa couldn't settle because of the bright Everton start, insisting that the emphasis is on the home team to charge out of the blocks.
He also disregarded the idea that the claret and blue players are worried about playing at Villa Park.
He continued: "It's a home game and the onus is on the home team to make the running, that's always the case in football when you have a big fanbase.
"You could sense the crowd willing us to do well. That was a big thing, the crowd wanting us to do well. It's up to us to rectify that quickly.
"There shouldn't be a lack of confidence playing here, it's a brilliant place to play.
"It's my responsibility. I take the blame for it. But there's a chance to rectify it on Tuesday."
Discussing the sending-off of Clark, Lambert accepted the centre-half was the last man but thought the challenge was far from nasty.
He added: "I don't think it was malicious challenge. If he's the last man then the referee has done what he's done. It wasn't a bad tackle really."
On transfer movement before the window, he added: "If something comes available and I think it's worthwhile, then you can look at it.
"Randy, Paul and I will sit down and see what's going to happen. We will see."