Yes they look good in the Domestic League, but not in the higher Leagues. The opponents they faced were of a completely different level. That's what makes it very difficult for them to be able to talk more in a competition like the Champions League. Meanwhile, here, I think we already know how many teams have strong predicate. So they are more able to compete here, although they cannot break the dominance held by PSG.
Marseille so far still looks great in ligue 1 and they managed to get a win without losing even once like PSG who are at the top of the standings, we admit their performance in the league is still much better than in the champions league and I think it is difficult for marseille to come out from the group phase champions league, now it seems better for marseille to focus on ligue 1 than them chasing the champions league which is indeed very difficult to get for a team like marseille,good performance in ligue 1 at least put pressure on PSG although maybe it won't last long .
Yes it is realistic when they prefer to focus on the Ligue 1. Suffering two defeats made it very difficult for them to qualify from the group stage. Talking about their opponents in this group stage, I can actually say that they are quite evenly matched. But Marseille has not been able to play that well to beat the 3 clubs that are its competitors. Maybe I can say that they are not ready for a higher stage like this Champions League.