It's very funny to see PSG who are very ambitious about wanting to win the UCL title for the last few years but they continue to fail every year. Everything has been done, including installing a deadly trio on the front line containing classy players such as Messi, Neymar and Mbappe, but their presence cannot bring PSG to the main podium to celebrate their success.
It is not funny, it is sad to know PSG never achieved their dream although they already spent too much money. PSG already built their squad with huge funds, they even bring Messi out from Barcelona for the first time. They even have those 3 awesome attackers (Mbappe-Messi-Neymar). But again, they failed to win UCL title.
I think PSG only focused on building their squad, they forget to focus on selecting a proper coach who is capable to win the UCL title. If PSG could hire Ancelotti or Zidane, they will have the chance to win UCL with trio monsters (Mbappe-Messi-Neymar). But it was, now there is no longer Messi and Neymar, they already moved to new clubs.
Mbappe has seen his condition at PSG realistically, he only earns money there but has very little chance of winning the UCL trophy. Moving from PSG was the final solution for him who still really wanted to experience the pleasure of touching this prestigious trophy.
That's why Mbappe has decided to leave PSG because he has a very little chance to win UCL trophy. Mbappe already won varied prestigious trophies, he seems only missing 1 trophy, UCL trophy. Since his dream to win UCL trophy, it is the right decision to move to Real Madrid. Real Madrid is always favorite team to win UCL trophy every season. Mbappe also can be the main striker in Real Madrid. With Mbappe, I'm sure Real Madrid will be unbeatable in UCL competition.