The Toffees lost 2-1, with Callum Wilson hitting the winner in injury-time.
Dewsbury-Hall, who scored on the day, complained: “It’s very tough, it’s very frustrating. I didn’t think we were probably good enough anyway on the day, but it was a nervy atmosphere from the start, and we didn’t capitalise on that.
“The two goals are awful to concede, so there’s no excuse and accountability needs to be taken. We’re men, we need to do that.
“We’ve put ourselves in a position to at least get a point from the game, to be the team to go on and take the three points. But a lapse of judgement two minutes later has killed us, and that’s not enough if you want to do something this year.”
Dewsbury-Hall added: “I’m very surprised. It’s not been us this year, pretty much.
“For large parts of the season, we’ve been really resolute and defensively strong. For one reason or another, the last two games, the four goals we’ve conceded have just been so bad.
“Teams aren’t having to do an awful lot to score. The set-piece ones especially, they’re so big in the game these days, it’s giving teams an edge on us going into the games."