Their defeat against PSG has left many doubting Xabi Alonso's abilities, and they're also unaware that PSG themselves suffered a similar fate at the hands of Chelsea. For me, this isn't a worrying thing because in football, anything can happen beyond expectations, and while it's true that Xabi Alonso hasn't fully adapted to make Real Madrid stronger than before it's not surprising.
Xabi Alonso isn't an average coach, we have seen what he can do with a team that's average now I can only imagine what he'll do with this super team that has lots of talented players. The coach and players are yet to understand themselves because I think when they do, they'll become and unstoppable force. Xabi Alonso still need few signings and I'm suprise he isn't going for defenders because that's where Real Madrid are lacking some quality. Their attack is sharp but they need to understand each other better and work together as a team. PSG winning Real Madrid wasn't surprising because they're the most dominant force in football at the moment.