MU 1 vs 0 Luton (EPL)
Copenhagen 4 vs 3 MU (UCL)
Fulham 0 vs 1 MU (EPL)
MU 0 vs 3 Newcastle (EFL)
MU 0 vs 3 Man City (EPL)

In the last five games, Man United only won twice, and both times it was by a narrow 1-0 score. This suggests that their attack isn't very sharp. However, if you look at their losses, there's always more than 2.5 goals scored. This also proves that Man United's defense is quite vulnerable.

The real evidence is that Man United often wins by a narrow margin, sometimes just one goal, which could be considered lucky victories. How long can they rely on their luck? That's what makes me doubtful about the match against Everton... it seems like MU won't get a positive result at Goodison Park.