The Gunners have now gone nine games without a Premier League win and sit 11th in the table after 15 games.
Asked if he was the right man to improve Arsenal's situation, Ljungberg said: "100% I think I can do that otherwise I wouldn't be here but of course it is difficult.
"When confidence is low, it is low. That is just how it is. But we are going to work on trying to get that back. We need to change this downward spiral.
"I don't think we should stop talking about the top four. But for us it is to concentrate on what we are doing here now and not look up, down, here, sideways. We just need to work on our own game and our own confidence."
Reports have suggested that Ljungberg is a genuine candidate to become the club's next permanent manager.