Gaurdiola will be able to revenge their last season defeat by Real Madrid, because it will be impossible for that to happen. Next season is the last season of Gaurdiola in Manchester City and it is not possible for City to win the champios league next season because Real Madrid is still super hot with the addition of Mbappe the team will be fire.
Real Madrid will be very hot next season just because of Mbappe's presence, but that doesn’t mean the Champions League will be easy for them. Just like you said, next season will be the last season for Guardiola at Manchester City, so he will do everything in his power to win the Champions League for the club before leaving, and we know Manchester City also has a strong squad. So I can’t really say Real Madrid will win the Champions League next season, but I know the season will be an interesting one that everyone will enjoy.
Real Madrid is always the most favored team in this tournament, but anything can happen depending on the team's condition when facing a crucial match. Pep Guardiola will certainly try to win his second UCL trophy with Manchester City as well as being the best farewell if he is not interested in extending his contract there. After last season's failure, Guardiola will try to improve Manchester City quality to win this trophy again. Manchester City, who have a squad that is almost the same as Real Madrid, will try to win this trophy again, they are very enthusiastic about winning the second title and are ready to give their best performance this season.