The 21-year-old, who was sidelined for two years with a leg fracture sustained in 2010, has failed to find the net in 16 competitive outings for the Gunners since his arrival from Auxerre in July last year.
However, Sanogo is confident that he will score goals on a regular basis once he has broken his duck.
"I needed six months to adapt. I've had quite a lot of problems," he told L'Equipe. "I arrived on one leg. It's been difficult to adapt to the league. There's a lack of confidence, perhaps a bit of pressure too.
"You're 21 and you play up front for Arsenal, it's not easy. It's a big club. The fans know that I've scored a lot of goals at youth level, they're putting me under a little bit of pressure.
"Once I've scored my first goal, everything will be fine. It's their problem if they criticise me. I'll still be here. I'm going to play, improve and score goals. Sooner or later, it's going to go in."
Sanogo has made three appearances so far this season.