"Ranga Chivaviro is a striker, and a striker’s life is you have to score. He started the league very well, he scored four goals. After that, there was a little drop," Youssef told Journalists.
"Now, we are working and always trying to make individual sessions for him. For sure, he had a big opportunity to score during the match but he was unlucky.
"He chose to take the shot with his left foot, maybe if he took it with his right foot, it would have been easier," he added.
"It's a decision that he made, as a striker he has to make a decision. We are working inside and we are trying to fix it."