The Norway striker believes the team's early season performance has not been good enough, especially after losing two games in a row.
"We've had a disappointing start to the season," Haaland said. "It's not good enough, and we need to figure it out and get back to winning ways."
Haaland emphasized that the team cannot afford to lose games, given the strength of other teams in the league.
"It's a perfect opportunity to turn things around against United," he said. "We need to all be on our best and get ourselves going."
Haaland also talked about the importance of using their frustration and motivation to drive the team forward.
"We need to use the anger and frustration we feel about losing to motivate us to do better in the next game," he said. "I expect us to rise to the challenge and deliver at our highest level."