Mbappé is still young, with a long career ahead of him. So if he performs aggressively from now then he can perform better later. Mbappe can give Real Madrid a good dream because until now the Real Madrid team has been strong enough, then the Real Madrid team has become even stronger due to the addition of Mbappe to the club. And these titles from the present to the future must be won.
Kylian Mbappe hasn't even featured in a match for Real Madrid since the club signed him to say that the team has become stronger since he joined the club so after must have featured in some matches then we can compare the performance of the squad before and after he came to the team however, Real Madrid is an already made club of which with or without Kylian Mbappe the team will still do well so let as not overhype Kylian Mbappe because he is still new to the team and regardless that he is a great player, there is still possibility that he may find it difficult to understand Real Madrid's play pattern because if you watch PSG and Real Madrid the both teams plays differently so it will take Mbappe some time before he can blend with the team.
However, Mbappe is still a young talented player and has a promising future so he is expected to do better than he did at PSG now that he is in Real Madrid.