Plymouth manager Peter Reid believes his side are contributing to their own downfall after a 2-0 defeat to Barnet.
The Pilgrims pressed late on for a consolation at Underhill and Warren Feeney spurned two golden opportunities but ultimately Reid was left to reflect on another disappointing result.
"We played some nice stuff at times but that doesn't matter if you keep getting beaten," he said.
"At the back we are continuing to make simple mistakes and they will cost you whatever the level you play at.
"That's the third or fourth goal already this season that we have conceded from a long throw, we're making it far harder for ourselves than it needs to be.
"And if you're conceding goals too easily at the back and you don't take your chances when they come at the other end then you're not going to win any games, it's as simple as that."