my car lost the speed,when i trying to aceleratin the car stay in same speed. on 2007 Jeep Patriot

I ready changed the ,fuel filter,oil,air filter but still the problem.what I have to do ?

Asked by for the 2007 Jeep Patriot
review when last tuned and have a diagnostic run to see if any issues with air intake, fuel delivery, or exhaust.
possible fuel system needs a clean. use ethanol treatment with 1 tank premium fuel.