Ancelotti is giving him confidence, this thing pushes him to show his true value.
Yes it has always been his dream, he once said it in an interview and he was really satisfied with where he had arrived.
He has the potential to become a champion of excellence, he pushes a lot and on the pitch he is like a racehorse.
His first season did not go well and he was not able to win any titles with the team but I see this is not the end of the journey because next season he will be much better in terms of adaptation. Mbappe did a good job for individual achievements even though when he first joined he had a little difficulty adapting but slowly the trust given by the coach made him start to show his best skills. If not this season then he still has a chance next season, even though people say he failed and I believe every player must have difficulties at the beginning before reaching the best of his career.
I think individually he capped a beautiful display and did what the best for him, like goal scoring, but unfortunately the team performance was a bit sloppy and they didn't win any major trophies like the UEFA champions league, Copa del Rey or La Liga. Initially everyone is arguing about it that Kylian Mbappe is a flop transfer or he will be the Hazard 2.0 even myself too but ultimately he has proven himself to be called the great player. At the beginning of season his performance was bit slower due to a lack of understanding with the team player but soon he works on it and adopted the team understanding with a pretty good response.
Besides that, Kylian Mbappe is now the top scorer of the league competition, and that's why he is the favorite candidate for the Pichichi award. So maybe next season will be more better than this one because now Xabi Alonso is their coach, and possibly he can make the better for next season and win some major trophies....