Chelsea caretaker boss Frank Lampard admits his players are failing at the "basics" after defeat at Arsenal on Tuesday night.
The Gunners cruised to a 3-1 win via a double from Martin Odegaard and Gabriel Jesus' goal. Noni Madueke struck for the visitors.
Lampard later said: "We weren't good enough, we were too nice to play against, too passive. In possession we weren't playing balls over their press, or winning second balls.
"Chelsea have been a big success for 20 years domestically and in the Champions League, at the moment we're not in that position. But from the moment I've been here it's been evident we're too nice as a team. We can't change things overnight but we better get their quickly because we have another game at the weekend and games to come.
"The passive nature of our game you can attribute it to many things. There's the easy go to that the players don't care enough, but they do care. You can be low on confidence but still show a dynamic side to your games. All the things we spoke about before the game we didn't do.
"We're a little bit conditioned at the moment which makes us too nice to play against. Maybe it was a different gap years ago but that's football. We have to think of ourselves and perform to a level. From what this season tells you, from start to finish, we have to find the reasons quickly. It's not an overnight fix.
"This is something that really has to be corrected. There are a lot of parts to it, Arsenal are a team that has been building for three years. They work on an idea and a way. For me it's impossible to come in for three weeks and work on those things.
"The main answer is simple. We have to do the basics better and then we'll get some progress. It's clear tonight for me. The first half is nowhere near good enough. But it's the reality. It's what I've come in to.
"Football moves quickly, we have to be aggressive about it. It's a collective, a performance. I don't believe players aren't caring. I don't believe that. The standards are clear."