Paul Cook delivered some home truths after his team recovered from a dreadful start to complete an impressive comeback with a 2-1 victory over Oxford.
United scored in the first minute when John Mullins headed in a corner but Liam Cooper replied in first-half stoppage time before Chris Atkinson won it at the death.
Cook said: "For some reason, our lads are a little bit nervous at home. That's not something we are making up, it's a fact. We are tentative at the start and sometimes are a little bit scared to do the right things.
"But we must embrace playing at home. Our supporters want to get behind us and they want to support us really well but we must give them a lift. The way we started did not give them a lift, the way we finished it did and we must get that balance right.
"This was a very difficult game against a very strong side who in my opinion could be the surprise team in this league, but after a such a bad start I don't think anyone can question my players desire or application to win the game because you don't score at the stages of the game we did without that."
Oxford manager Chris Wilder was unhappy over decisions he felt went against his team.
"I don't know how for the life of me he (referee Dean Whitestone) found five minutes of extra time in the first half and there were a couple of penalties for us as well," he said.
"We felt comfortable and it could have gone either way, but we've come away from the game we've had big periods in and finished pointless.
"Yes, we should have defended the first goal better and should have finished the chances off in our dominant first half-hour because it was all us but I do feel the officials have played a big part is us not getting something out of the game.
"I think we've worked extremely hard and at the very least I think a point was deserved."