The Champions League will be more difficult than the European League, which requires Sevilla to prepare as well as possible so they don't become a team that only complements the Champions League. They are a strong team in the Europa League, many even say they are the kings of the Europa League. They should be more motivated to become a team that is not only called strong in the European League, but also in the Champions League.
It's okay for Sevilla next season, even though they are playing in the UCL, but the knockout phase will continue in the UEL. Not condescending but Seville is as if the mascot is UEL. Sevilla can't compete in the Champions League with the existing squad, they can't even compete in La Liga. It must be admitted that Sevilla King UEL, even though they cannot compete in the UCL, remember that any team that enters the European league Sevilla will beat it.
Sevilla won the Europa leaf but it was not easy for them, in all the games they played till the final game was tough for them, they just managed to win most of their game. The present form of Sevilla is not of standard to compete with big teams in the Champions league. Sevilla needs to get quality players to strengthen their squad if they want participate better in champ league next season. What helped Sevilla in winning the europa championship is also as a result of experience.