La Liga is held by Barcelona and Sevilla have not been able to surpass Barcelona in La Liga but for the Europa League they are a strong team and managed to come out as winners for the umpteenth time.
Both are equally important, but because they are too focused on the Europa League, domestic titles in La Liga cannot be won.
By becoming champions of the Europa League Sevilla managed to get a Champions League ticket for next season but somehow I think that Sevilla will be left there and that's why I expect them to stay focused on the Europa League which they have at least 7 times.
I think the Sevilla team can make a big impact in La Liga next season, just like Barcelona. Because this team has secured the Europa League title by doing amazing performances in the current season. As a result, confidence has been created among the players of the team so that the team will want to pass the next season as well.
This is not the first time they have won the title, so there is no reason for them to be more confident that they can appear in La Liga with good performance.
As an illustration, Sevilla has not been able to beat Barcelona and Real Madrid and these two teams have always dominated the race for the championship there, so what can be expected from Sevilla in La Liga if they cannot beat their strongest teams.
Wouldn't that be in vain for Sevilla and in the end they will only regret because they can't focus on titles they should be able to have again like the Europa League.