It seems that many are still expecting Mbappe, but we have to be realistic that Mbappe will not go to Real Madrid, especially in the current transfer season.
You cant be certain. The transfer window is still long. A lot can happen in a month.
If Mbappe doesn't want to sign a new deal, PSG can be forced to sell him and use the money to strengthen their squad. Madrid will not buy Mbappe for the amount PSG are asking for.
Personally, I feel if Mbappe wants to go then PSG should let him leave to Madrid, but if they can convince him to stay for one more season, they should. That would give them enough time to look for replacements that can step in and replace Mbappe.
PSG do not want to sell Mbappe because they do not want to lose all three of their top players. Messi has left, Neymar would most likely leave, so losing Mbappe would be a huge blow for them.