Xavi Alonso is a good coach but I don't think he is ready for Real Madrid, coach Real Madrid is more than just having tactics or feeling good enough, you must be able to manage players. Real Madrid has players with a very difficult character, Vini, Bellingham and Mbappe are football mega stars and the pack some very difficult character to their CV.
For Xavi Alonso to be successful at real Madrid he must learn how to manage this players right and motivate them into doing what he expects them to do. I think he should have moved to another club and learnt more before coming to take over at Real Madrid.
This is where taking control and being in charge comes in, and I heard, according to Fabrizio Romano, that Real Madrid has given Alonso the power(authority) to do whatsoever he likes, after making a complaint that the mbappe and Vinicius click wasn't working due to both players individual brilliance. If he fails to maintain a good relationship with Vinicius or mbappe, I would understand, because those players have got their own attitude as players.
I don't know if the job is too difficult or big for him, but all I can definitely say is that he's got the best among the best talents and very young players at his disposal. There is clearly no excuse at this point.