for juventus they need to be better prepared for the second leg later, and hope they can make a miracle in the europa league this season. Juventus still have hope of reaching the final and they must maximize this hope as best they can for the second leg later. The Europa League is Juventus only hope for a trophy this season and this will all determine their fate in the second leg.
I quite doubt that Juventus can do better in the second match not only because they have to face Sevilla as an away game also Sevilla who managed to hold a draw in the first match will maximize their advantage playing at home by attacking and scoring goals and if they can win even if only by 1- 0 alone is enough to bring them to the final because they win on aggregate goals. Juventus have wasted their best chance in the first match and that's because Juve are always difficult to score goals, we can see how Juve often only score 1-2 goals in league matches and it's not much different from the European league.
Sevilla must be very happy with the results of the first match and even though they didn't control the match they had a good chance at that time, and the second match they will be more comfortable to beat Juve but they have to be able to break through the Juventus defense who are pretty good in every game and that's the key why Juve can to the semi-finals of the European league.
Sevilla doesn't have any chance in LaLiga so getting to the final and being the champion will be the only hope to end the season with title as well as the other 3 teams in this competition, they have no chance in the domestic league so fighting for the championship will be being the last hope of these 4 clubs ending the season with at least one title.