Daniel Jebbison, the 17-year-old striker, scored the winner to condemn Everton to their ninth home defeat of the season, equalling their worst-ever record with one more game to play at home.
"I don't have a lot to say," the former Real Madrid manager said.
"We played very bad. We were not in the game from the beginning to the end.
"A little bit embarrassed because the performance was really bad. It was a great opportunity to get the result to stay in the fight for Europe.
"We lost a great opportunity. That's it. I'm a little bit surprised, but at home we usually have been doing this kind of performance, but not like tonight.
"I have to take responsibility for this and also the players have to take responsibility."
Defeat almost certainly ended their chances of European football as they remain eighth, three points behind Tottenham and West Ham with a vastly inferior goal difference, and Ancelotti hopes the imminent return of fans to Goodison Park “wakes up” his side.
"I hope so, maybe they can wake us up," the Italian added. "I hope they are going to show them a different performance.
"This season we have been double-faced - really good away, really bad at home.
"If we are going to qualify for Europe it's a step forward quicker. I think we've improved compared to last season and we have to improve for next season."