Poor Liverpool got a really horrible result... I don't know if they had a worse day than that in the season so far. They played really effectively in fact, couldn't take advantage of a lot of goal chances. 
Otherwise this match would never end like 0-3. Atalanta will probably play a highly defensive game and look for counter-attacks only next time.
When it comes to Leverkusen this would have surely ended by a way bigger score. You were just unlucky otherwise I think over 2.5 goals was one of the best choices for this one.
Benfica did a pretty good job. They are quite strong in home matches.
I think this season Liverpool are not playing well, or maybe you could even say bad, with their match yesterday which they lost badly to Atalanta, I don't think they will be able to qualify, even though there is a chance to qualify, but it feels almost impossible. Liverpool did attack a lot, it's just that Atalanta were more efficient in the game, even though they didn't attack much, they were able to score goals which made Liverpool lose the match. I think Liverpool are having problems, but I don't know what the reason is, they are experiencing a decline in performance. Otherwise this match would never end like 0-3. Atalanta will probably play a highly defensive game and look for counter-attacks only next time.When it comes to Leverkusen this would have surely ended by a way bigger score. You were just unlucky otherwise I think over 2.5 goals was one of the best choices for this one.
Benfica did a pretty good job. They are quite strong in home matches.
With Liverpool's second leg against Atalanta, I think Atalanta will be more confident in the match, especially since they will be playing at home, obviously that makes them more confident or maybe they will be more defensive to defend it.
Maybe it will be difficult for Liverpool if they face Leverkusen, because what we know yesterday is that Leverkusen managed to beat Munich, which is known as an unbeatable team, and I think Liverpool will have difficulty if they play Leverkusen.