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For the world cup title, it is true because Ronaldo has not been able to achieve that, but Ronaldo's individual achievements have achieved everything. Mbappe is still young and his career is still quite long, but now there are many players who may have similar abilities so he has to work hard to achieve an individual career like Ronaldo or Messi. Now his dream of achieving several individual careers is increasingly open because he is playing at a club that has a long history.
His first season at Real Madrid will be a reference for his future and will test how far he can help Real Madrid defend the La Liga and Champions League titles. Even though it is not easy, the chances will be much greater because Real Madrid is the only team that consistently still has the chance to defend its second title next season.
Achieving individual achievements should not be the main goal why Kylian Mbappe joined Real Madrid. I know Mbappe is a quality player, but he must realize that at Real Madrid he is not the main star. Vinicius and Jude Bellingham's rays are much bigger than Mbappe's, but I hope Mbappe doesn't mind doing his job perfectly. Mbappe and Vinicius will next be contenders for the individual title, as will Jude Bellingham.
Team achievements including domestic titles and European titles such as the Champions League must be Mbappe's main target with Real Madrid. He could be the main star at Real Madrid, but competition with other players will not make it easy. Mbappe is different from Ronaldo, so it will be difficult for Mbappe to achieve individual achievements.