Leighton Baines has blamed a lack of "chemistry" between Everton's players following a disappointing defeat at Manchester United on Sunday.
The Toffees were booed off by the travelling fans following a 1-0 loss at Old Trafford; a third successive Premier League defeat leaving Roberto Martinez's side 12th in the table.
Although Everton have an FA Cup semi-final to contest against the winner of the tie between West Ham United and Manchester United later this month, their league form has frustrated supporters.
Despite having a squad featuring John Stones, Ross Barkley and 25-goal striker Romelu Lukaku, Baines insists Everton's current team are not gelling together as they should.
"I just don't feel as though the chemistry is quite there with the team on the pitch at the moment, and it hasn't been for a while," he told the Liverpool Echo.
"We are maybe leaning too heavily on individuals to come up with something.
"We're in games; we were in the game on Sunday and had a couple of chances, but we're not performing as a team to the level we know we can or we should be.
"Results have an impact on that because chemistry and confidence go hand in hand. Look at the teams who are having success this year and you'd say they have chemistry.
"If I had to say one thing, I just don't know if it's there with us at the moment, for whatever reason."
Baines has urged his team-mates to put things right ahead of their semi-final date at Wembley to try and salvage their campaign by earning European qualification for next season.
"We're not where we should be," the 31-year-old added. "We haven't won enough games to make excuses. You get judged at the end of the season and we're getting towards the end of the season, and we're not near a position we should be in given what we've got.
"We're all accountable. We try and put it right but we've not been able to. That's the third loss on the bounce in the league which is disappointing to us all.
"We want to win every time we go out to play and we'd like to go into that cup game with a few wins behind us. That's our season in some respects now, it certainly is from the fans' point of view and we've let them down a lot, it's our only way of making it up to them."
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