The own goal that occurred through Gianluca Mancini was very profitable for Sevilla, because if it had not happened to Mancini, AS Roma would have won the Europa League this season.
Sevilla was a threat to the Roma defenders from the second half. They forced the mistake that Mancini made which lead to the equalising goal. Sevilla were too fast for Roma. Sevilla have played in the finals of this competition many times against different teams, so they know how to keep calm and not let the tension of being in a finals get to them. Liverpool will be in the Europa next season, maybe they will win the competition from Sevilla with the annoyance of not being able to play in the champions league.
Roma worked extremely hard to win the Europa League, but they were unlucky to lose in penalties to Sevilla.
Sevilla is one of the most experienced clubs in Europa League history, having won the title multiple times under various managers. Yesterday's game was very special because so many people were hoping that Roma would win because of Mourinho's influence and some players like Dybala and Abraham, but they were not lucky enough to see the game until the end, which I believe is the reason for Roma's failure in the final.
Sevilla, congratulations.