I honestly don't really understand how the coach should prove himself in the first few games, he basically just came in and did minimal work. Now, during the Club World Cup, Real are playing well, but I don't think this tournament can be taken seriously enough to draw conclusions about Alonso's performance, so the only place to evaluate him is La Liga and Champions League.
Agree. FIFA Club World Cup is not being taken seriously by any team. So we don't know yet whether Xabi Alonso will be successful with Madrid. Xabi is experimenting with Real Madrid's squad. And Madrid's performance seems to be somewhat stable. But it's not yet time to reach a conclusion.
Real Madrid won 1-0 with Juventus. In this match we saw Tchouameni in defense and Alexander Arnold in midfield. I don't think Madrid will play in this formation next season. Alexander Arnold is mainly a defender and Tchouameni is a defensive midfielder. Also, if Mbappe is added to the starting XI, we will see more changes in the match tactics and formation.
Considering the performance I see of Real Madrid against Juventus, it can be said that Real Madrid will not be successful in the Club World Cup. Real Madrid's performance against Juventus was inconsistent, it was a Super Sixteen match, but when Real Madrid will fight against an opponent in the quarter-finals, that opponent will be tougher than Juventus, so it will be difficult to beat that opponent with the same performance. Maybe the clubs are not so interested in the Club World Cup, but every team is interested in the Champions League or the local league title. Now if Real Madrid cannot change this performance, they may fail again like last season. Since the new manager has taken charge of the team, he will definitely take various steps to change the team's performance and we are waiting to see those steps.