Jim McInally called Peterhead’s 4-1 defeat “harsh” while ruing missed chances in a “game of two halves”.
The Blue Toon were looking to extend their recent run of form at Airdrie.
Rory McAllister scored after 36 minutes to give Peterhead the lead in a half the Balmoor outfit dominated.
But after failing to take their chances, they were ruthlessly punished after the break.
Jack McKay drew the hosts level after 69 minutes before Ryan Conroy and Andy Ryan scored within the next seven minutes.
Scott Stewart finished the scoring in the fourth minute of stoppage time.
McInally feels 4-1 did not convey the full story of the game.
But he admitted his side were not good enough after the break.
He said: “The score was harsh, there’s no doubt about that.
“In the first half, we were really good but we missed our chances to put the game to bed.
“We could have been three up at half-time, definitely.
“In the second half, they came out of the blocks really well and we were pretty poor.
“We needed to be a bit stronger under pressure.”
The Blue Toon remain in eighth and are level on points with next week’s opponents Albion Rovers.
McInally expects that to be a big game in the course of Peterhead’s season.
They are both four points from a play-off spot and off bottom place.
McInally confirmed new centre-back Liam Gordon has got a week’s training under his belt and is nearing a return to action.
But he also is encouraged by what he has seen at the other end of the pitch in recent weeks.
McInally acknowledges the weekend’s result was far from ideal but is confident for the rest of the campaign.
He said: “It’s a setback obviously, nobody likes losing games, but the pleasing thing for me going forward is we will score goals.
“We are only four points off the play-off spots but we’re also near the bottom so it’s going to be tight.
“We will just stay positive and have a go for the rest of the season.”