Real Madrid midfielder Luka Modric understands fans' anger after defeat to Barcelona.

Real were thrashed by Barca 4-0.

Modric said, "It's a difficult moment for us. We didn't expect to lose and play so badly. We have to learn from our mistakes. We don't think that it is an attitude problem, but we don't know the reason. We didn't play as a team, and if you're not compact against Barcelona, then this happens.

"They're a very good team when they have space to play in, and that was the problem. We weren't compact out on the pitch and we gave the other team a lot of space. We have to play as a team, because when we do that and we all fight hard, we're a really good side. It's not the first time that this has happened to us and we have to improve. It's a difficult moment and we have to pick ourselves up and try to improve."

Modric added: "The fans aren't happy and that's normal. They're entitled to back the team or criticise the team. Today we deserved the criticism. But we have to pick ourselves up and learn from this. Now we have to show character. We're Real Madrid and we can't give in or drop any more points. We have to get ourselves out of this situation."