It is still too early to say that PSG will have difficulty qualifying for the round of 16, but if you look at the remaining 6 matches, it seems that PSG will have difficulty qualifying. because PSG still has quite experienced opponents in the Champions League such as Atletico Madrid, Bayern Munich, and Man City. Let's say PSG can win against PSV, RB Sulzburg, and VfB but with 12 points it seems difficult to qualify directly for the round of 16 unless PSG can steal points from one of these strong opponents.
This is just an estimate for now, but if Enrique can bring in some experienced players in the transfer market later, maybe this scenario will change. Because for now with the squad that PSG has, it seems quite difficult for them to compete in the Champions League even though PSG already has an experienced coach like Enrique, but we also know that PSG does not have the mentality when playing in the Champions League, that is the obstacle.
Seeing the opportunity for PSG to qualify for the round of 16 is still open. 8 teams with the best points from 8 matches will qualify directly. and 8 other teams can qualify through the play off. the opportunity can still be obtained by PSG from there. with luck, their opponents in the Play off later will not be very strong teams.
There are still 6 matches and many possibilities can happen. 7 teams currently get wins from the first 2 matches. the difference in points will not be far for each ranking. maybe a lot will change in the next 2-3 matches.
Currently many doubt PSG in the Champions League. especially with their squad which is certainly different from previous seasons. what they can do is give the best with what they have now. their opponents are indeed strong teams, it clearly will not be easy to get wins from those teams. but football often gives surprises.