Well Leicester went at Sevilla. But Sevilla was clearly the better side. Here's a couple of stats that tell the story.
Possession - Sevilla 68% Leicester 32%
Shots on Goal - Sevilla 8 Leicester 3
Corners - Sevilla 8 Leicester 1
But the good news, if there is any for Leicester, is that they only lost 2-1. So they now go home with a chance. Getting an away goal for them is big. Still don't think they can get a clean sheet at home so there going to have to put 3 in the next to avoid extra time/PKs. But they have a shot and are in better shape than most expected.
Schmeichel's save of that early penalty kick was huge, and instrumental in keeping them in the tie. They were also a little better in the second half, though that's not saying much. The setup and finish for their lone goal was a pretty bit of play for them on an afternoon that saw them well-dominated. Sevilla could have had at least four goals, easily.
A 1-0 win would get Leicester to advance, as we know, and they actually may be more likely to do that than to get three or more goals at home. Leicester have only scored three or more goals at home four times across all competitions this season (thrice in the Prem [3-0 v Burnley in September, 3-1 v Palace in October, 4-2 v Man City in December], once in the FA Cup [3-1 AET v Derby on February 8, for their first home goals of 2017 (following 3-0 thumpings by Man Utd and Chelsea in the Prem)]). Meanwhile, they have six clean sheets at home across all competitions (though none yet in 2017), including two 1-0 victories at home in the Champions League (Porto in September, Copenhagen in October), and won all three home matches in the group stage. A 2-1 home victory that would leave both clubs level on aggregate and away goals, you ask? They have two - in the Prem v Swansea back in late August, and in the Champions League v Club Brugge in November to close out their group stage home matches.
Leicester have only eight goals in 11 matches across all competitions thus far in 2017 (zero in six Prem matches, seven in four FA Cup matches, and one in the Champions League match we've been discussing). Five of those goals came against Derby County in the FA Cup fourth round and fourth round replay (they couldn't even follow that up with any against Millwall in the fifth round), leaving three goals for the entire year against top-level competition (Prem or Champions League clubs) in eight matches (two against Everton in the FA Cup third round, and the goal against Sevilla). Their 2017 scoring average across all competitions is now up to 0.727 goals per match, and the average against top-level competition is 0.375. Strange things happen (their Prem title, for example), but I think if they get past Sevilla it's going to be via frustrating the Spaniards and somehow scratching one out. Otherwise, the options I see are elimination through a goalless draw, or just getting rolled. The Foxes might want to see if they can get some scoring going in their next few Prem matches to prepare themselves....