It could be said that with Bayern Munich's frequent failures in the domestic league, their chances of winning against Arsenal are decreasing and I think Arsenal with their consistency can bury Bayern Munich's hopes of going further. Of course, the Gunners are very confident with the instability of Bayern Munich so far and they will definitely try as hard as possible to get a win in the first leg.
I know it's not an easy job, especially since the first leg took place at Bayern Munich's home ground. But at least if Arsenal knew the weak points of Bayern Munich's defense then they could steal the aggregate lead first. If this can go well then it is not impossible that Arsenal will break the bad record in history when facing Bayern Munich. It might be a bit naive if we don't discuss this clearly, but Bayern Munich can't do much this season, especially in the Champions League.
We see the weakest Bayern Munich we have watched in recent years, while Arsenal are in great form and continue to fight to become champions in the Premier League. If I had seen such a matchup in the past years, I could have said that Bayern Munich would pass the round without difficulty, but this year my opinion is different. I think Arsenal is a better team and I can say that they have a very high chance of winning this match