Whatever will happen to PSG this season, even though they are able to reach the final in the Champions League, does not change Mbappe's decision to leave PSG. It has become a unanimous decision for Mbappe who is determined to leave Paris to start his future career in another league, and the club that will be Mbappe's goal for Supporting his career is Real Madrid. I think it is impossible for Real Madrid to refuse this Parisian star player. He has extraordinary abilities that Real Madrid players don't have, meaning he will complement the Real Madrid squad next season and of course Real Madrid will be a stronger club. from now on because of these top players.
Being a PSG player for approximately 7 years, there are ups and downs in Mbappe's mind, even since PSG has more than one star player like Neymar and Lionel Messi, Mbappe has learned many things at PSG, that every player will definitely leave when his time is up, he too have to move from their comfort zone and explore new leagues like the two previous players Neymar and Lionel Messi did, they have good experience in other leagues and Mbappe has to emulate that so he can become a top European player and I am sure of the potential that Mbappe has one day he will be like those who have a lot of experience.
Mbappe played many years alongside Neymar, they were a great duo together, but that's only when Neymar played, what Neymar had during his PSG run is exactly what he has right now, dude is always injured, he literally went to Saudi Arabia and played one game and got injured and ended his season yet again, which shows why PSG wanted to get rid of him quickly.
Mbappe will go to a team that will actually have a UCL chance, because PSG always struggles, except this season which is a shocker, because it's his last season, but Real is always fighting for a chance to win UCL, and he will want to be in a team that doesn't just win the league, but will win UCL too, and adding Mbappe to Real Madrid would mean that they will become a team that's exceptional and probably the best team in the world.