My 2007 Ford Focus runs in high rpm. When I put the car in park it sounds like someone is slightly holding gas pedal down. I have to use brake when on road more frequently. Vehicle will run over 25 miles per hour without touching gas pedal.
Is the check engine light on?
I would clean the throttle body, idle air control valve, and MAF sensor and look around for vacuum leaks. If you’re somewhat handy these should not be difficult things to do, or if someone else does it, it shouldn’t be too expensive.
Good comment above. Besides having the diagnostic codes read, if this car has one, I’d focus on the idle air control device first.