Juventus edged into the semi-finals of the Europa League thanks to the 3-1 aggregate success, but Conte believes that both the players and supporters were below their best in Turin.
"We fell asleep for Lyon's goal," the Italian told Sky Sport Italia. "It's that simple. We thought it was going to be easy.
"I want everyone to remember it's always a battle and we have to keep pushing.
"I'm referring to the crowd too, as they should always support this team. I didn't like the crowd that much tonight."
The draw for the semi-finals will take place on Friday.