Alves admits the result was a setback.
“We were not lucky, but this is sport. There is no such thing as an easy game," the former Barcelona star told Mediaset Premium.
“In this competition you need to be strong psychologically and know how to make the most of every opportunity.
“We created several chances to score and played pretty well, but games don't always go the way you want them to.
“In the second half we again had quite a few scoring opportunities, but it was a difficult match."