We can't judge Sevilla about their place in La Liga because they didn't focus on the league games and they didn't need the La Liga games to earn points at all in the last games because they couldn't reach the top of the table and on the other hand, Sevilla wanted to win the Europa League and they have enough hope for it because of the last wins the had in Europa League.
Many people still can't separate domestic league from European ones. Sevilla and West Ham are not that top in their leagues at all. Sevilla finished twelve and West Ham in the fourteenth position, yet they won Europa League and Conference League vs Italian teams that are classified better than them in the ranking.
Sevilla particularly are a hard number in Europa League, they are like nightmare for the teams facing them there!
Both West Ham and Sevilla understood they can't be chasing both domestic league along side Europa and conference league respectively. knowing the competition in the domestic league league they both focused on where the felt could give them more opportunity to get the UCL and europa ticket respectively for next season. West Ham will be among the eight teams from the premier league going to Europe for winning the Europa conference league and Sevilla has gotten express ticket for UCL. it really funny how teams from the bottom climb to participate in Europe when teams occupying 8-10 position on the table can't find a place.