Manchester United manager Louis van Gaal was unhappy after his side's goalless draw against Cambridge United on Friday night.
The Red Devils could only manage a draw at the Abbey Stadium and the Dutchman says that he was disappointed to see the same mistakes he saw against the likes of Yeovil Town and Queens Park Rangers earlier in the season.
"I was very disappointed at half-time because we made the same error against Yeovil Town and Queens Park Rangers," van Gaal said.
"We played in the same style of play [as the opposition] and you don't have to do that.
"In the second half we played much better, we built up the game from behind and played no more long balls. Then we could have scored but we didn't so now we have to play again.
"I know in these matches every aspect of a game is against you. The crowd is against you - that is nice I think - but also the pitch and also the defensive organisation of the opponent. Everything you can imagine is against you.
"Cambridge are the weaker team - everybody knows that - and you have to solve that problem [of how to beat them].
"You cannot always solve that problem and I have seen that a lot of times. But fortunately we are still in the FA Cup. We have to play at home and we have to beat them."
With key players left out of the starting eleven, the Dutchman says that he has no regrets over his team selection.
"I gave Wayne [Rooney] a rest," van Gaal said.
"He's fit to play, as is Juan Mata. I don't regret leaving them out of the team."
