Paul Lambert admitted Aston Villa are "a million miles away" from where he wants the club to be.
Lambert's side head into Saturday's clash with Swansea looking to halt a run of four successive defeats that has seen them slide to within three points of the Barclays Premier League relegation zone.
Home form has been the biggest problem, with Villa picking up only seven points and scoring just six goals, the worst record in the top four divisions.
They have found the net in only one of their last six home matches and the fans made their feelings clear as Villa slumped to a 1-0 defeat by Crystal Palace on Boxing Day.
Lambert conceded expectations are not making life easier, saying: "The lads are edgy on certain things but we have to work on that.
"You can't turn round and be critical of the crowd, that's for sure. It's too big a club.
"It's probably not helping in terms of us trying to play our game at certain times but they pay their money and they're entitled to voice their opinion.
"Football is about giving people something to cheer. We're doing everything we can to keep building what we want to try and do. I'm a million miles short of what I want to do with the club.
"Personally I know what it's like because I've played with big clubs as a footballer. I was never exempt from criticism.
"I remember my first few games at Celtic, I lost them. People were saying go back to Dortmund, 60,000 or whatever it was. Until I bedded myself in and got a grip of it, then it went reasonably okay.
"I know criticism. For the team, when they're young, they need that support through thick and thin.
"Some people talk about bravery of going in for a tackle that's 10 feet high and blood, guts and thunder. Bravery's taking the ball in front of 40,000 or 50,000 in an area where people will just shy away from it.
"As long as they never do that - that's the one thing I can't accept, trying to hide. As long as they keep trying to do the right things, then I'll never criticise them.
"I don't want to be sitting like this every time. It's a challenge I'm not going to wilt under. I've never wilted. You fight it, you don't run away from it."
Michael Laudrup's Swansea sit a point above Villa and are also not in good form having gone five matches without a victory.
"Even if you don't win in one, there's pressure," said Lambert. "Football now, you get one or two games. If you've not won two games, there's a crisis, it's getting shorter and shorter.
"Swansea are on that same kind of run, I'm pretty sure if you asked Michael he'd say the exact same thing. It's a big game for both teams."
Midfielder Ashley Westwood returns from suspension but Lambert is limited in his options, with top scorer Christian Benteke and defender Ron Vlaar still injured.
Meanwhile, captain Ashley Williams has called on Swansea to turn the momentum in their favour before the year's end when they visit Villa.
A 1-0 loss at Chelsea on Boxing Day followed a defeat to Everton and means Swansea have one win in six Barclays Premier League matches and 10 points from the last 10 games.
The 11th-placed Swans are just four points better off than 18th-placed Fulham, who occupy the final place in the relegation zone, entering their second match in 48 hours against a Villa side beaten at home by Crystal Palace on Thursday. Villa, who are one point behind Swansea in 13th, have lost their last four games.
"We have lost the last two, so it's going to be a massive game for both teams," defender Williams said on swanseacity.net.
"It's very important. Every game is in this league.
"They lost to Palace at home on Boxing Day, and they will be desperate to make up for that particularly as they are at home again.
"Villa Park is a very tough place to play but we know we are capable of winning there and bouncing back from these back-to-back defeats."
Swansea boss Michael Laudrup will make changes for the trip.
Striker Michu, midfielder Nathan Dyer (both ankle) and goalkeeper Michel Vorm (knee) missed the Boxing Day loss at Chelsea, along with defender Garry Monk (knee).
Leon Britton returned from a broken toe and could continue.