It seems to me that even if Bayern are not the main candidate for the championship this season, they are still much better than other clubs like Barcelona or PSG... Right now Bayern are in first place in the group and have won two games... That's a good result...
This season would be very favorable for Bayern Munich in the UCL cause their group doesn't even got much threat and the only team (Manchester United) that would've been a threat to them finishing 1st place in their group is not in good shape and has lost 2 matches currently to keep them at the bottom of their group standings, however Bayern have won twice and would definitely win against Galatasaray in their next UCL game to get 9 points even though they're not playing in their home ground.
Barcelona are not really bad and would go far this season in the UCL, just like Bayern they're the group leaders in Group H and have secured 6 points so I believe they'll quality for the next round, their performance this season in the UCL is better than last seasons, however PSG is not performing as expected but atleast they're in the 2nd position in their group but I dount if they'll qualify for the next round.