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.
He will have an individual career as long as he can play collectively with the team and the more trophies he wins with Real Madrid, the easier it will be for Mbappe to achieve his best career. There are many other star players at Real Madrid so Mbappe is not the only one and he has to work harder if he wants to become one of the great players there. Vinicius and Belligham have made good achievements at Real Madrid and now is the opportunity for Mbappe to make his dream come true.
For La Liga, it might not be too difficult, but Mbappe will be quite tested when playing in the Champions League. If his presence does not make Real Madrid's strength more solid, it will be very dangerous for his career. He had to overcome the competition between his teammates and become one of the players who contributed greatly to Real Madrid.