This is really sad.
Forget about the result. Forget about the fact that the last 4 minutes were our best moments of the match. Forget that we have 0 points from the first 2 matches. Forget how this will affect our mentality. Forget that we were outplayed and were lucky to lose this match 2-1.
What worries me most is that the players know that something is seriously wrong with this team this year. Did you see how angry they were with each other? Did you see Pogba's reaction when he almost received his second yellow? Or whenever someone made a mistake? Our attitude was more worrying than the result IMO. It's like we're missing that guy who could lead us up front. No reference point and so many new faces all over the pitch.
This win will allow Roma to believe they can actually win the Scudetto this season. Last year we just kept winning and killed any momentum and self belief they wanted to have. This season is going to be the same, only vice-versa.
Dude, these are professional footballers -- most of whom have won championships before. They're pissed because they know they haven't figured themselves out yet and are clearly underachieving until they do. That's good and natural. If I were in their shoes, I too would be pissed -- at myself, at my teammates, etc. A little of that is natural and good.
As professional footballers, they're not as weak-kneed as fickle fans on the forums here. Some have had to overcome long injury recoveries, years under Ferrara and Ranieri, etc. They know the long road it takes and don't give up after a couple of crap matches.
I'm not nearly as worried as you. But if you think Juve winning another scudetto and getting out of the CL group is automatic, I'd be terrified... because neither are probably happening this season.