The reason Mbappe left PSG was basically to win Champions League title. He did his best to win it at PSG but seems luck was never on the luck of PSG because I don't see anything that stopped them from winning it for several years that they assembled the best players in the world. There was a time they had Messi, Neymar, Mbappe and Di Maria in the same team yet they could not win it. Maybe Mbappe have realized that it may not be easy for PSG to win it, the reason he left for a team that have better records and chances of winning it. His decision to join Madrid have nothing to do with bad performance at PSG where he was almost worshipped.
Many say Real Madrid is Kylian Mbappe's dream, that's why he left PSG and has been talking about leaving for a long time. But I want to say that winning dreams is not always a plan. When you are in a better position than what you want in your dreams, you don't want to change it. Sometimes the reality is better than the dream. I think reality was good for Kylian Mbappé. I think the only thing he lacked while at PSG was team achievement. Although he had good personal achievements, his team prevented him from achieving more.
Playing Champions League is the biggest dream for every player. I bet Kylian Mbappe would have stayed at PSG for a few more seasons if he had the opportunity to play in the Champions League at PSG. But even though PSG is strong as a team, I don't know why they are not able to achieve the ability to play in the Champions League. They tried a lot to play Champions League, they got many star players in their team to play Champions League but still the results did not come in their favor. They have star players like Neymar, Messi, Di Maria who have won the Champions title in their team but they have not tasted the Champions League. My question is, is there any force applied to the players from their club? That's why they can't perform to get a chance in the Champions League.
Despite having so many star players in the team, when PSG did not have a chance in the Champions League, Mbappe did not understand that PSG could not bring him a big achievement. Then his decision to change the party became more complicated. He later joined his dream club and Champions League winning side Real Madrid. Real Madrid is a well-known club in the Champions League and they are an experienced team in the Champions League. I think Real Madrid are capable of extending Mbappe's achievements. But after his arrival in Madrid, Real Madrid's performance is not very good. One thing must not be forgotten, the end of the Champions team is better than the beginning.