PSG's meeting with Sociedad cannot be taken lightly because Sociedad is also not an easy club to beat so that they can enter the round of 16, it is not easy to qualify. That's why PSG must be able to play optimally in the first leg meeting because of course it will be difficult to correct mistakes. If that is done at their first meeting, Luis Enrique must really be able to provide the right strategy to fight this Spanish club.
Sociedad have gone through the group phase well enough so that they managed to qualify for the round of 16 and I don't think they will waste this opportunity. PSG is not an easy opponent but Sociedad also cannot be underestimated because in the group phase they managed to hold the Champions League runners-up to a draw last season in the home and away matches, so they managed to emerge as group winners.
Luis Enrique has to prepare everything because facing teams that are not taken into account will be much more difficult because they don't have too much weight when playing. So there will be unexpected surprises such as several clubs in the group phase beating teams that are much stronger.