De Gea is always the easy person to blame, the first goal we conceded was down to our inability to press well, Davis was under no pressure when he receives the ball, Scott and Fred are to far back and its easy for Everton after that. Harry, who was shit the whole game, was also beaten too easily before it gets to De Gea, who has to parry that ball as he isn't sure what's behind him, Shaw has to give him the call to let it run.
The whole team is to blame for that, Ole included, his passiveness during the matches doesn't help. This summer, a CB is needed as Maguire is a lability.