I was actually disappointed at Bayern Munic for loosing to Mainz but as it is football, such things happens to male the sports interesting and full of surprises. On the other hand, I love the energy with which they bounced back by humiliating RB Leipzig with 5:0. This results shows that Bayern Munic losing to Mainz might actually be a mistake, although, it is a costly mistake. Bayern Munic have good opportunity to win the German Bundesliga this season even though they still have many teams to contend with.
That's football and maybe the team will experience defeat in an unnecessary way and the same as Bayern Munich who lost against Mainz at that time. Regardless of the big win that Bayern Munich got in another match, they must avoid something like that if they want to dominate the Bundesliga again. Leverkusen is increasingly showing the quality of a solid team and Bayern Munich must take them seriously this season because if left alone, it is not impossible that Leverkusen will defend the Bundesliga title for the second season.