The forward believes the Scot needs more help from the players.
After going behind to Sunderland on Saturday, Manchester United eventually finished as 1-2 victors thanks to a brace from youngster Adnan Januzaj.
It was far from a dazzling display from the Premier League champions, but does take the Red Devils into the international break on a winning high.
However, forward Wayne Rooney has said the players have not been good enough for new manager David Moyes and that the team needs to give more support to their boss.
“I think us as players know we haven’t been good enough. A new manager has come in and we haven’t been good enough for him,” the 27-year-old was quoted by the Telegraph.
“Obviously the manager is under a bit of pressure, but we know as a team it’s us who have let him down.
“We have to pull together for the manager and show the sort of fight we have done here and we’ll be fine.”
It was United’s third win of the season and stopped a rut that had seen the side lose back-to-back matches in the league against rivals Manchester City and at home to West Bromwich Albion.
Everyone knew it would be a difficult task for Moyes to emulate the success achieved by predecessor Sir Alex Ferguson and so far that has proven to be the case.
There is now a two-week gap for the 50-year-old to mull things over, as the majority of the United squad go away on international duty.
Rooney will be one of several stars from the club that will be trying to help England qualify for the World Cup, with tricky home ties against Montenegro and Poland.
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