For the Europa League trophy, Leverkusen may be unlucky because they choose the wrong strategy. It will be a good lesson for Xabi Alonso and Leverkusen players, they must always remember to choose the right players on the starting lineup. In the final Europa league this season, Xabi Alonso used inappropriate starting lineup. So, the game of Leverkusen can't be effective, they got a difficulty to score goals.
Truly Bayern Leverkusen strategy on that final was very bad because there performance on that match was nothing like there performance on there local league perhaps it could be that they underestimated Atalanta a lot on that match that's why they got what they did not expected on that match, though considering Bayern Leverkusen performance on there league most people were very certain that the Europa League belongs to them but it was really unfortunate for them, so actually Xabi Alonso has learned his lesson because he will never allow his boys to look down on other clubs again on there next season matches, however is good that they managed to win there local league instead of ending the season without achieving any trophy.