Bayern Munich has good H2H record against PSG, but for now it is difficult condition to really be sure who will win and of course if Bayern Munich can take advantage of their advantage and win then it is only small score like 1 - 0 or just ends in draw and shares points.
Some big team in the UCL competition are indeed bit disappointing, many bad games and results have occurred for those big team who in the previous season always competed tightly.
PSG happens to be my favorite in this game probably because I just want to see them do well in the champions League and that they have actually put in a whole lot of efforts in the champions League for the longest and I just want them to succeed even if I know Bayern has been doing so well in the champions League so far, it's going to be a really interesting game and i can't wait to see the game.
Munich Vs PSG will be a match worth watching considering the status of both teams as the rulers of the Bundesliga and also ligue 1 at the moment, but I think in the match Munich have an advantage in terms of experience and consistency in the UCL, so I personally see them can beat PSG in the match, indeed so far the performance has been quite consistent has been shown by PSG in the domestic league by not being defeated in ligue 1, but their performance is inversely proportional to what we see today in the UCL,where they only won 1 match, 1 draw and 2 losses from 4 matches that have been played.
I personally don't know what your reason is for betting on PSG in the current conditions, but I think you are too bold to do it and to hope they can win over Munich is certainly a difficult thing if we look at PSG journey this season in the UCL.