The Premier League champions currently sit seventh in the table, 18 points off leaders Chelsea, after a season of inconsistent results.
|MAN UNITED LATEST
|9/1||Man Utd are 9/1 with bet365 to lose to Man City by three goals|
"They have definitely hurt," he told reporters. "They have hurt more because I joined Manchester United with big expectations myself - that I was coming to the winning football club.
"I've got a winning mentality and that’s what I wanted to do, so I’m disappointed with myself and I’m disappointed that we’ve been unable to do that. But it has not been for the want of trying, that’s for sure."
The likes of West Brom, Everton and Newcastle United all ended long waits for a win at Old Trafford in shock results this season, while rivals Liverpool comfortably triumphed 3-0 earlier in March.
Moyes insists he does not dwell on such setbacks and demoralising results but called for consistency as his team look to improve in the final eight league games.
He continued: "I move on, but the first thing you always do is look at what you’ve done yourself and then move on and see if it’s something I maybe could have done better.
"As it has been, we’ve not had the [good] performances as regular as I wanted and that’s where we need to find that consistency where we can do that.
"It’s important to win all the games. Big teams or small teams, you want to win them all. But we want to beat the top teams as well as the bottom teams."