Ralf Rangnick has laid the blame for Manchester United 's dismal 0-0 draw with Watford at his wasteful players.
The Red Devils were held by Roy Hodgson 's side at Old Trafford on Saturday, failing to score despite managing 22 shots.
Booed off at full-time, the results means United have lost ground in the race for Champions League football and Rangnick made no bones about the reason for the poor result.
"Our job as coaches is to help the team to create enough chances," the interim manager told BBC Sport post-match. "The number of clear chances we had today had to be enough to win a game like this."
He added: "We did everything apart from score. It's hard to take that result. In the end, if you miss that many chances it is difficult to win the game. We were in full control for almost the whole game, we didn't allow them hardly any counter attacks.
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"We need to be sharper in front of goal, you can hardly create more chances than we did today. In the end it is a very frustrating afternoon.
"Had anyone told me that we would create that many clear chances I would have said 'yes, that is enough for us to score one of two goals at least'. But we didn't."
Cristiano Ronaldo came closest in the first half, hitting the post from close range before squandering more opportunities.
"That was not the only one [chance]," Rangnick noted. "In the first half we had five massive chances then in the second half we had another three or four. Today we had enough chances to win that game.
"Sometimes we are unlucky, when we hit the post, but we also had a few opportunities one-on-one with the goalkeeper. This is not luck, it is a question of sharpness and efficiency in-front of goal."
Bruno Fernandes, who captained the Red Devils and missed a number of chances himself, agreed with his boss and said: "We created enough to win this game.
"We created chances, I had two or three chances to score but today the ball did not go in. A really frustrating one," Fernandes admitted.
"Almost the same happened versus Middlesbrough in the FA Cup, we didn't go through and didn't win today."
While United sit in fourth place, they are just two points above Arsenal, who have three games in hand to make up the gap.
The Gunners face Watford at Vicarage Road next week, with the point that the Hornets earned up north boosting their slim chances of survival.
