I at some point doubt the possibility of PSG getting pass this stage but then I see that they are definitely going to put in the required efforts because they have really gat their mind on achieving much already from the UCL but just that the league is such a competitive one such that they will need extra effort to stay in the league, personally I think there will be no need of getting pass this stage because they know beyond this stage, they will definitely crash out so they could just save the stress and focus on their domestic league.
When talking about the possibility, this season PSG has a greater possibility than the previous two seasons because this season for the Round of 16 they will face the dark horse Sociedad, which of course makes PSG a favorite in contrast to before when they had to meet Manchester City and Madrid in the Round of 16.
But to go further for PSG of course this is still very questionable even though they have a player of Mbappe's caliber but we know that the Champions League is a gathering place for big clubs so that 1 player alone will not be enough to make a difference in a match.
On the other hand, they are also always unlucky in the Champions League because in the last 2 seasons they were faced with champions (at the end of the Champions League) who made them inconvenient to fight back and this season it is also fortunate that they came out of the hell phase despite being in second place because at least there is still a chance for them to develop.