Neil Harris said he felt gutted and like "he had his wallet pinched out of his pocket" after Cardiff City fell to a 1-0 Severnside derby defeat against Bristol City on Friday night.
Chris Martin found the back of the net with fewer than two minutes on the clock, with the Robins capitalising on an errant Joe Bennett pass and breaking away to score the opener.
Cardiff dominated the game thereafter, but just could not find the back of the net for love nor money and the manager was visibly disappointed not to have come away with anything from the clash.
"I'm absolutely gutted, I feel like I've had my wallet pinched out of my pocket.," he said after the match.
"We were by far the better team, created chance after chance, dominated the game, the ball, set plays, every duel on the pitch.
"One misplaced pass and the ball ends up in the back of our net.
"It has to change and can't keep happening but it has happened again. I feel robbed.
"It's a game we deserved to win and should have won."
The Bluebirds had the lion's share of possession and also had 17 shots on goal in comparison to the Robins' two, but it counted for nothing in the end.
Harris admitted that, following the international break, his side simply have to find that clinical edge if they are to start firing their way back up that table.
"The amount of chances we've created there, we've done enough to win two or three games of football.," he added
"We have to find our clinical edge. It's not just about the strikers or wide players, who had chance after chance, it's about us as a team.
"But some of our football was outstanding tonight, the way we opened them up and got into the six-yard box, the amount of knock-downs, it just baffles me how we've not won a game, let alone not got a point."
With just three wins in the first 11 Championship fixtures of the season, Harris believes his team should have more points on the board at this stage.
He conceded that won't happen until his side stop making silly errors, for which they have invariably been punished this season, and find consistency in front of goal at the other end.
It is in both boxes that serious work needs to be done when the season resumes in a couple of weeks, but Harris insisted it is not panic stations just yet.
"For two and a half games we've been really good," he said of his side's recent form. "We created 14 chances in the second half against QPR, 17 tonight, 16 on Tuesday night.
"Performances are there but I want to win games of football.
"I look back at games and think 'where do we improve?' and ask if I need to make changes, personnel-wise, but the majority of the players have played well the last few games.
"There's certainly no panic from me, but I want to win."
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