I think the PSG team's motivation when playing in the Champions League will be different so it has nothing to do with whatever results they get in Ligeu one.
And it must be admitted that PSG's performance this season has decreased slightly compared to last season, but being able to defend the title in League 1 is not a difficult thing because the quality difference is quite significant between PSG and other teams and financially PSG is also far superior, so it is natural only if there is no team capable of matching them in league 1.
In Ligue1 PSG can still do a lot to get good results with more satisfying results because remembering that other teams are not better than PSG itself. However, in the Champions League, PSG still cannot do much to get satisfactory results because the quality of the teams they face in the Champions League is always different from the teams that PSG often faces in Ligue1. I even still doubt PSG when they visit Real Sociedad in the second leg of the Champions League even though PSG already has two goals in aggregate for the second leg.
Real Sociedad is a strong team. In their first match against PSG, they had injured players and were very impressed with them. Of course, they may have a chance in the second match when these problems are eliminated. Still, we have to say that PSG has an advantage and 2 points will give them an advantage. PSG is a quality team and I am sure they will compete well in the rematch. League 1 is still a league in which they can easily win the championship. It has no serious rivals.
I agree that Real Sociedad is a strong team, in fact, if they were not strong enough they could not stand in a tournament like the Champions League, and playing in this tournament for any team means they are strong enough to make a problem for other teams but I think playing against a team like PSG with all the superstar players they have can't be easy for a team like Real Sociedad and let's say I think PSG will easy pass this stage in the Champions League against Real Sociedad considering the situation they have.