Sevilla, they are currently focused on Europa League and I think they don't really care about La Liga recently, even previously match they lost against Getafe with score 2-0, and now their position is really very not completely secure yes.
NO. They won't focus on Europa league only, they must focus on La Liga matches, too.
Just look at their points, it is not very secure. The points gap between Sevilla and 2 teams in the relegation zone (Valencia, Almeria) is only 2 points. If Sevilla gets a loss in the next few matches, they can drop back into the relegation zone again. They must expect to stay in La Liga the next season.
Next match they will against Cadiz although Sevilla head to head is better but Cadiz can't be underestimated right now, also Cadiz will be playing at home, so I doubt Sevilla will get three points in that match but I hope they can make a surprise.
Both Cadiz and Sevilla look unconvincingly in the last few matches. But I think Sevilla should be better, they have a stronger squad and they must get 3 points to stay away from the relegation zone. Although it will be an away match for Sevilla, I assume Sevilla will win the match.