QPR head coach Julien Stephan described his side's performance against Birmingham as "embarrassing" as they fell to a 1-0 defeat on Wednesday night.
A goal in the sixth minute from Patrick Roberts condemned the Hoops to a fourth consecutive loss, and to 18th in the Championship table.
"The first half was more than disappointing, I think it was an embarrassing," he told BBC Radio London.
"We lost all of the duels from the moment we came onto the pitch, and so when you lose the duels it is very difficult to play football," he said.
"It was better in the second half, maybe because the players we brought on brought more quality and intensity, but maybe it is because Birmingham dropped their intensity in the second half."
Stephan said the club's current points tally could give them confidence despite the poor run of form.
"The worst thing to do is to panic because we have 47 points and we have nine points more than those teams in the relegation zone.
"We know we need to win four or five more points to stay in the league and that is the next objective for us.
"Everybody knows that, but if you want to realise that quickly we need to increase the standards."
- Latest QPR news, analysis and fan views
- Listen to QPR content on BBC Sounds
