McCarthy, who came off the bench against Newcastle United at the weekend, has made just four appearances all term and he has become annoyed at warming the bench.
The 25-year-old says that his priority next season will be to play far more regularly and he hopes that Chris Ramsey trusts him to be the side's number one from now on.
“For myself it has been a very frustrating season to go from playing to not getting as much game time as I would have liked,” McCarthy said.
“I just want to be playing football. That is my main priority next season, as I just want to be playing.”
McCarthy's route to the first-team has been blocked this season due to the form of Robert Green.
Green has been one of QPR's most reliable performers throughout the campaign and that has made it impossible for McCarthy to dislodge him in the starting line-up.
His chances of playing next season should be increased, though, as Green is said to be on the verge of leaving Loftus Road.
Green is interesting Chelsea, according to the London Evening Standard, and if he does leave then McCarthy is likely to be the side's first-choice between the sticks.