They should take every match serious and not look down on any of their opponents in every competition they’re participating in. Bayern Leverkusen should not settle for less but should try their best to win the trophies in the remaining of the two competitions they’re participating in. While the Bundesliga looks like they’ve won it, they should focus on the Europa League match against West Ham as it will be a shame for them to be removed by them. There’s more hope in the Bundesliga trophy than the Europa League trophy, so they should focus on it in order to prevail in the matches there as they’ve been doing in the Bundesliga matches too.
Bayern Leverkusen is very much aware of what they will be facing ahead of them so I'm sure they wouldn't want to jeopardize it by taking chances as Thay know too well that they were definitely going to need to maintain their top position till the end of the league if they must be able to win the trophy as they don't only ha e to stay unbeaten but winning the trophy is very much important for them aswell.
If Leverkusen fails to win the trophy this season which I don't think is going to happen, it actually going to be a big embarrassment for them because they have already got to the point where everyone believe in their ability already due to their performance so far in the bundesliga from the beginning of the season