After a bright start, Phil Foden's header deflated United's optimism and, from that point onwards, the Reds struggled to fashion an equaliser. Erling Haaland's second-half double took the match away from the Reds and, effectively, settled the encounter.
"If you lose and you play good and you have the chances we created in previous games, you can take some positives," added Nous.
"But today was just not good enough.