Q: Accelerator is not responding

This morning when I left in my car the brake and battery light was on so I stopped and turned it off and restarted to see if the light would go off but it didn't and when trying to restart it sputtered and died but on the second time it started right up and about a mile later I was stopped amd revved the engine and the lights went off but the car was driving fine. About 10 hours later the car started up just fine but when I tried to back up giving gas did nothing no rev no rpms nothing and same in drive but in park it revs so i turned it off and then it wouldn't start again it would turn over twice and then the noise would stop so I pushed it back into my parking spot and then it started right up first try but still wouldnt accelerate. The car has driven perfectly prior to today and has no other known issues. It does havw 220k miles. Any help would be appreciated!

My car has 220000 miles.
My car has an automatic transmission.