Allan Johnston's men are still looking for their first win with nearly a quarter of the campaign gone and Barr admits they need to sharpen up their act quickly.
He told STV: "Even before the Celtic game, we have been losing by one or two goals and it is frustrating because we've actually been playing not so bad football.
"We need to take it step by step but we want to give something back to the fans, we haven't given them much to cheer about so far. We've got some good players and we need to start showing that.
"There's some good young players in the squad and we are aiming to get a settled starting XI and get that first win.
"We just want to give them something to cheer about on the park. We need to get results on the park and bring fans in."