Real Madrid won last season, they performed very well last season so no one thinks that their performance will decline, regardless of whether Mbappe is there or not, but basically Real Madrid is a strong team, but it must also be admitted that Mbappe's presence will help make the team performance better.

Mbappe is indeed a player who has very good qualities and in fact he is one of the best players in the world today, but all players who join a new team of course need time to adapt, and so does Mbappe.
I think there is a very big possibility of dominating La Liga next season because their rivals Barcelona are currently in a slump with all the problems they have.