This result is not too disappointing considering that Arsenal is not a weak team, conceding one goal is very normal in a big match game against opponents whose strength is almost equal. Amorim needs to sharpen their attacking line in the next match because based on the results in the first match, their weak point lies in their inability to break down Arsenal defense.
Actually Ruben Amorim has increased Manchester United attack but because they are up against a tough club so it is not easy to break through the opponent defense but Man United has played quite well and only conceded 1 goal so even though they lost it was not too painful for them and for the next match I hope Man United also plays like that so they can win, if you look at the toughness of Arsenal and Fulham are different so I think Man United did not play under pressure like before.