Real Madrid has great record in Champions League so it is hard to bet against them. They have strong team and good players so they have good chance of winning. But Champions League is very competitive and anything can happen. Mbappé is great player who has done a lot at young age but his success might have made him bit arrogant. Real Madrid coaches need to keep him humble and remind him he is part of team. Real Madrid will likely do well in La Liga but Champions League is a different challenge. Let's see what happens.
Yeah actually the real Madrid has a wonderful record in the La Liga by dominate a champion league, although that champion league will be very competitive in the next coming season, but that I don't think real Madrid can find it difficult considering the players that have currently now.
Because now that Mbappé has been signed into real Madrid again, what are we think can happen next year? Due to how everyone knows his performance in the his former clubs he make the team very standard than what even the didn't expect from the guy, and which is why I'm so much hope for him that it can perform more for real Madrid.
The only thing that Coach needs to do now is to keep the team addressed so that they will understand each more together with there new player.