"The way that the game went, it was just crazy to be involved in," he told Sky Sports. "I think in the couple of hours from the start of the game to the end of the game, the amount of emotion you went through, you're just feeling probably a little bit of relief.
"I don't think we needed to celebrate too hard. We let ourselves down in the last 20 minutes of normal time and to play for this club, it involves huge responsibility, and we didn't take responsibility in that last 20 minutes of the game.
"But like I said, the way that the game ended, we were disappointed with the way we acted."
On Ten Hag, Maguire insisted: "I've been at this club a long enough time to know that the noise around the place is always here, whether it's with the manager or the players.
"There are players under huge amounts of pressure and when you lose football matches or go on bad runs, the manager becomes under pressure as well.
"We all know that it's about maintaining our focus and aims for the season and sticking together. We believe that we can still achieve things this season."