Real managed to draw 2-2 on Saturday after going 2-0 behind in Pamplona.
"Because we are Real Madrid and we are ambitious, the result is not enough. Especially because of how we started the game and the chances we had to make it 0-1. Then the harsh and unfair sending off of Ramos changed the game. It was obvious that the first yellow wasn't even a foul. The referee made a mistake like we all make mistakes," said Carvajal.
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