Bayern Munich team needs to improve and do better in their attacking force if they want to achieve good results when they play against strong opponents, against PSG they were not in their best if not they would have utilized the advantage of the one man down of PSG to score goals but they couldn't stop the shine of PSG as they bowed down to them and lost 2:0. Currently any team that wants to play PSG needs to be ready to attack them hard because they have improved their game play after winning the champions League last season.
Bayern Munich failed to do well against PSG's match strategy and strong defense. Bayern Munich tried to dominate the match. Munich's players also attacked relatively more. But even then, the team could not break PSG's defense.
You are right that Munich's attacking players need to perform better. Last season, we saw that Bayern Munich played well against small teams, but their performance against big teams was weak. We saw Munich winning by big margins against small teams. But scoring 1 goal against renowned teams becomes a big challenge for Munich's players. Is this a weakness of Munich's attacking players or a tactical weakness?