An internal inquest was held in the wake of Sunday's 1-1 draw with fellow strugglers Reading as Bowen and boss Mark Hughes urged the players to take on greater responsibility.
QPR are currently languishing in the relegation zone after failing to win any of their first 10 Premier League matches and Bowen hopes the frank exchange of views will make a difference.
Speaking to QPR podcast Open All Rs, said: "In the last two days we had meetings, sat down and let individuals know in no uncertain terms it's unacceptable.
"They held their hands up and took it on board and we will work at it to make sure we are better next time.
"We encouraged them to point a few fingers and put demands on them. I want them to be a bit more angry and demanding of each other."
QPR owner Tony Fernandes has repeatedly given Hughes his backing this season but reports continue to suggest he could be sacked if results do not improve, with Harry Redknapp tipped as a possible successor.
But Bowen does not believe it would be a good move to replace Hughes with Redknapp, saying: "People talk about Harry Redknapp and this and that. The fact is he took over Southampton in 2005 as the big saviour and he took them down.
"But when things go wrong people say get Harry in."
Bowen added: "We are really surprised and gutted the way it has gone. We expected and wanted better.
"The common denominator is that it has usually taken a few months to get our methods across and way we play.
"But like Tony said, I feel we are the best people for job. The facts, CV and history to prove it. We know our history over the last 10 to 12 years that this will change and we will be successful."