France head coach Philippe Saint-André was disappointed with his side's performance in their 20-13 defeat to Wales at the Stade de France.
Dan Biggar's second-half try and the boot of Leigh Halfpenny did the damage in Paris as France fell to their second defeat of the Six Nations Championship.
"Even if we tried to do things, we took too long to get our game going. You can't spend your time defending in international rugby," Saint-André said afterwards.
"The only thing we can do now is lift our heads and work. We were lacking too much to win the game today. We gave away incredibly stupid penalties."
He added on the team's future: "You can't say we're a great team at the moment. Some of our players struggle to last 80 minutes and we know that.
"You have to congratulate Wales. They were pragmatic, and we're not at the moment."