I doubt that Arsenal can win this round, indeed both teams still have the same chance, but in the next match Arsenal will face Munich away, of course this will make Arsenal feel pressured and I'm not sure that even if Arsenal uses all their strength, Munich will also do the same thing, let alone competing at home will make Munich more confident to win.
In the UCL, all teams will do everything they can to win and the two teams you mentioned have also played the first leg with a draw. So for the match in the second leg, it is certain that both teams will try to be better in order to qualify for the next round and Munich, with its conditions which are different from last season, must be able to beat Arsenal, which this season is also much better than last season. Even though on the one hand, Munich may have more enthusiasm because they are playing at home, this will not guarantee that Munich can win easily.
On the one hand, Bayern Munich's focus now is the Champions League, their struggle will soon end in the Bundesliga because Leverkusen only needs one more win to become champions. Meanwhile, Arsenal still have to divide their focus on the English Premier League and also the Champions League, this is a challenge for Arsenal because they have to be smart in maintaining the fitness of their players and they have to be smart in rotating.
It was a shame that Arsenal couldn't win in the first meeting and only drew, which was an advantage for Bayern Munich. And for Arsenal it will be a big pressure because they will play away in the second leg. The odds are now in favor of Bayern Munich, but it will be that easy to make it happen, because Arsenal themselves will not want them to have to end their Champions League campaign this season. It will also be difficult for us to predict who will win in this match, and they may have to continue to the penalty shootout round.