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.
This is a very interesting match. Many parties favored Arsenal to beat Bayern Munich in the first leg because Arsenal was statistically better than Bayern in the UCL (until the quarter-finals). Bayern in Tuchel's hands this season has been very, very inconsistent, Arsenal can take advantage of Bayer Munich's weakness to score early. Arsenal also benefited in the first leg because they acted as hosts.
However, Arsenal must consider Bayern Munich as a strong team in the UCL, because they are very experienced in this competition. Apart from that, Kane will still be a frightening threat for Arsenal, especially considering the history of 10-2 cruelty, Bayern Munich certainly has high confidence in this match. I myself am still confused about which team to bet on in this match, but what is certain is that I will bet on the number of goals because my prediction is that in this match both teams will score goals, so Over is the right bet.