I fully agree with you, he is one of the most complete and successful coaches of all time, he is truly the number one capable of creating a cohesive group of players like Real Madrid, all young and so successful, to think that when he was at Napoli he was criticized, I am truly shameful and he was right to leave
Ancelotti is known as a coach who has no tactics but he has always been successful at any club. I think no other coach can match his success and in the modern era of football it is very difficult to find a coach like him. Pep Guardiola as one of the coaches with the best abilities has not been able to match what Ancelotti has achieved, let alone if we talk about the current coaches whose abilities are still below him.
Next season will be a step for how Ancelotti can defend the Champions League title and now the support of the players he has is very supportive. Mbappe is expected to be one of the players who can help Real Madrid defend the Champions League title next season.
I don't think there's any doubt to the fact that Carlo Ancelotti is actually one of the best coaches in the world at the moment and also one of the best in the history of the beautiful game of football because his achievements actually backs that claim. Last season, he was able to win the UEFA Champions League trophy with Real Madrid which happens to be his fifth European Cup trophy, a record that's only enjoyed by him alone. For all the times he's won the competition, he's never won it consecutively but I strongly believe that he'll achieve that feat this season.
Real Madrid recently added few more world class players to an already intimidating squad which have significantly increased their chances of retaining the UEFA Champions League title next season which Kylian Mbappe happens to be the most notable addition. With the presence of the France national team captain, I think Real Madrid will win the UCL come next season