~snip~
They will play with Lyon, Nice and Lens respectively in the league. After these three games, their fixtures have matches that look easy. Of course, there is no easy match, but they will enter a more comfortable tempo. I don't think they will lose much points because they will only focus on the league. I agree with you on this. However, I think Messi and Mbappe will focus on league matches and make PSG champions this season. Because they failed the Champions League and disappointed their fans. If they finish the league in second place, they will have caused another big disappointment to their fans. I don't think they would make any more mistakes.
Most likely, in the matches against Lyon, Nice and lens, Galtier will play his main starter again. in particular, a core player for the defense who was previously absent against Rennes. that is, Galtier does not want his team to lose points in the following matches. 7 points difference from Marseille, making Galtier have to be more serious to focus his team back to winning ways. if not, it will automatically provide an opportunity for Marseille to reduce the difference in points from PSG.
At least, after slipping in the Champions League the only chance for Galtier is to present the Ligue 1 trophy. because most likely, next season he will be replaced by a new coach. So, like it or not before the coaching chair moves to another coach. Galtier must present a trophy, at least he can still bring PSG to dominate Ligue 1.