Speaking to Sky Germany, Muller said: "To be honest, I'm p***ed off. To quote Oliver Kahn: What I miss from us players are the balls in the game. We are showing significantly better approaches in training. It's okay to feel pressure, but there needs to be energy and freedom. That's missing in our game.
"Sometimes we have to speak about us players. It's not just about the coach. We have many international players at the highest level, we need to step up our game."