Luani is right. I'm a bit worried about a fact. We destroy small teams, but against good opposition we suffer a lot. We drew United in the last minutes, beat Roma with difficulties, lost to Liverpool and today again. Anyway, I think Roma didn't play as good as the scoresheet say and we don't deserve to lose for 3-0 or more. We dominated possession almost the entire match, but we lacked the final product and they don't.
No problem for now, it's a lose against a good team. We still are first at the group, but we can't lose again in the next match (away) in Bordeaux.