Those who don't like Manchester City must say that Man City was very lucky in the UCL final match against Inter and then, several opportunities were created but Inter were really unlucky, the teams that rearranged their squad this season definitely targeted to shift the dominance of Man City, especially in the EPL, Man Utd and Arsenal continue to relentlessly have ambitions to destroy Man City's dominance. if madrid succeeds in buying Mbappe then I am very sure madrid will again dominate the UCL.
If Madrid gets Mbappe they will surely be better, but at the same time Madrid has amazing finances, not spending crazy amount of money like City does, and even when they get a player, they sell some others to cover the difference and earn money to make up for it as well.
This is why I believe that the best thing to do in this case would be making sure that Real has a better future, it is not just about this season, it's about the long term and they are doing fine for the long term without a doubt. They do need a striker and Mbappe would be great for that but no need to get him right now, they can get him next season as well, would be long term but financially smart decision to do that. Other teams just throw money at the issue.