For Arsenal to get a draw while playing at the Emirates Stadium is actually quite bad. Because they know that in the second leg when they play at their opponent's home ground, namely at the Allianz Arena stadium, it will be more difficult for Arsenal.
Seriously Arsenal was suppose to win the match, Bayern Munich which they played against haven’t really been performing well in their local league, they lost their last two matches before they played against Arsenal, and since they played at Emirates stadium, they should have just taken advantage of that and win the match, but they ended up playing draw, when Arsenal visit Bayern Munich at their home, the match is not going to be easy for Arsenal, and Bayern Munich will do everything possible to win the match, seriously they bought have equal chances to win the match.
I think the performance of Bayern Munich on their local league has nothing to do in the champions league that's one thing we have failed to understand and I hope before the game Arsenal did not look down on Bayern Munich because they have been in poor performance in the league and they became relaxed thinking they will get an easy win since they were playing at home, Arsenal has been in better performance in general but the champions league being the only trophy that Thomas Tuchel and his team Bayern Munich is eyeing this season after losing out in the league trophy, it will take a very good performance for Arsenal to defeat them since they struggled to come back in the game when Bayern Munich was leading 1:2 in the first leg of the game. Arsenal failed to use the home advantage they had to win the first league and allowing Bayern Munich who knows how to beat them score before them even when everyone never expected them to get a point in the game shows how much improvement needed in the Arsenal team especially when it is the champions league game against a prominent team. Arsenal should be ready to fight against Bayern Munich in the second leg else we will see a repeat of what happened between Bayern Munich and Lazio in the second leg where Bayern Munich defeated them 3:0 at home to move to the quarter finals.