The Germany midfielder accepts everyone is questioned given their form struggles.
He told Marca: "[Everyone] knows that, if you don't get results and you don't meet expectations at Real Madrid, there are questions. That's why we're at this club. It's normal. With Zidane, we've already had times like this and we normally come out of bad runs.
"A few weeks ago, after losing against Cadiz and Shakhtar, we went to Barcelona and had an amazing game. We got through that and the boss is the first person to know what happens at this club if you don't get results. In the end, what we have to do is improve and try to win games. The boss will find the solution."