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.
This condition should not make us worried. I feel confident that Mbappe will be another option for Ancelotti to get variety in the game. Indeed, Mbappe's position is the same as Vini's, but I feel confident that Ancelotti is able to play them together in different positions. Because Mbappe is certainly able to play well not only in 1 position. Maybe he can be a central striker, or a main striker. Maybe he can be like Ronaldo. Being the main striker and opening up a lot of space to attract defensive players.
Vinicius Jr. is one of the hopes of Real Madrid, so this star will be a regular for Real Madrid next season as well as Mbappe can be seen at the finish line of Real Madrid. There are some players who will be in the regular XI for as long as they stay at Real Madrid, but may only change their position temporarily due to the addition of some new players to the club. If Mbappe and Vinicius Junior are in the attacking line and Rodrigo helps them as a winger, Real Madrid will be stronger in the attacking line. As aggressive as we have seen Real Madrid this season, we will see a more aggressive Real Madrid next season. This season Real Madrid has been successful in all the tournaments and surely they will continue this success in the next season.