Barcelona already has very good players, and Hansi Flick has been able to manage them well. So far, they have added a little ammunition to their club, making Barcelona increasingly confident that they will continue to show their best performance next season.
Xabi Alonso is still adapting to the new team's conditions. His strategy is still not quite right. He needs to raise his components higher because the team he is currently coaching is at a higher level than before. This is like life and death for Xabi Alonso. If he cannot make Real Madrid perform well and consistently, he may lose the trust of elite clubs (except Leverkusen).
Barcelona's players are much more optimal because they adapted well to Hansi Flick's coaching style last season, while Real Madrid's players need to adapt first to Xabi Alonso's coaching style. It's only a matter of time. If Real Madrid's performance isn't as expected, there might be circumstances that aren't working well, such as the loss of several key players which could hinder the strategy's perfect execution. But I'm confident Real Madrid will be one of the contenders for the La Liga title next season because, given the current conditions, only Real Madrid has a chance to compete with Barcelona.