Xabi Alonso has a lot of work to do, and it won't happen overnight. He needs to adapt to find a playing format that works for the team. The defeat against PSG isn't the only reason to punish Xabi Alonso. It takes time to perfect the team, especially since they were missing several key players in defense during that match. PSG are indeed heavily favored to win the Club World Cup, but Chelsea shouldn't be concerned about that. The most important thing is preparing for the final, so they can accept whatever the result.
Chelsea is fully prepared for any outcome in this Club World Cup final because Chelsea is a team that has a strong fighting spirit in any competition, even though PSG is clearly favored by most people in the Club World Cup final. Meanwhile, Real Madrid certainly still needs to make more improvements, especially in key areas like defense and midfield. Without improvements in these two areas, Real Madrid will be a weak team next season. And the downside is that they won't be able to achieve much in the Champions League next season.