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.
Real Sociedad's performance this season has improved quite a lot and they have proven it in the UCL group stage matches and La Liga matches so this will indeed be a serious threat to PSG, but if we look at the overall strength of the two teams at the moment there is almost no significant difference so it is indeed both The team still has the same chance of qualifying for the next round.
Luis Enrique built the PSG team with quite positive progress, even though at the start of the season the PSG team's performance was a little down, but now they are slowly recovering to be better, and indeed in the UCL match against the Sociedada team it will definitely be fierce because every team in the round The top 16 of the UCL are the best teams.
That is not fully correct what you are saying about Real Sociedad. In fact, they are quite a bit weaker in La Liga this season than they were last season. In 22/23 they were at 38 points after 18 games. But their performance in the Champions League group was strong. Needless to say that the defense was the best we have seen in the Champions League so far. They are the team that conceded the least goals of them all. Dortmund and Arsenal both conceded 4 goals and Real Sociedad topped that with only 2 goals in all games. In La Liga it's looking differently, but it is still a decent defensive performance so far. Now the games really count and it is not the most spectacular match in the Champions League, but it is an interesting game because it's tough to say where PSG stands compared to Real Sociedad.