Chelsea midfielder Nemanja Matic has admitted the Blues have to work hard if they are to bounce back from a very disappointing start to the new season.
They suffered their third Premier League defeat of the season and already 11 points behind leaders Manchester City.
But the 27-year-old, who scored a phenomenal goal against Everton, believes the team's upcoming two games could help the morale of the players.
"Of course we are not happy," Matic told the club's official website.
"Everybody is sad because of the result. Obviously we feel bad. We are in a difficult moment, and having four points after five games is not normal for our team.
"If you saw this game, I cannot say we deserved to win but we deserved a draw.
"Chelsea are not used to being on runs like we are at the moment but this is the reality. We have to work hard to get our game back to the way we played last season.
"I really don't know what's happened but it's not good for us and we need to see what we can do better as a team.
"It's good we have another game in a couple of days against Maccabi. We have to win, for our own confidence and for the fans. Then we have a derby against Arsenal, so I hope we will be ready for that and we can take three points."