Roma lost 2-1 on Wednesday night.
“It's strange, recently the ball just doesn't want to go in," the Little Pharaoh told Roma TV.
“We created so many opportunities, but you've got the put it in the back of the net. That is what counts and we've got to be more consistent.
“There are regrets, because the Coppa Italia was an important objective for us. We cared about this tournament and had prepared well, but were a little distracted in some situations.
“We gave it our all to turn the situation around and I think we showed the right attitude. We won't have all these scoring opportunities against Juventus on Saturday, so we must be more clinical in front of goal.
“We must try to be stronger than bad luck, put this behind us and focus on Juve. A result in Turin would give us more confidence, so we need to be aggressive and attacking."