loses power while preseing on gas rpms go up and down then stalls no engine light

I have a nissan altima 2000 4cyl. I ccantfigure out whats wrong with the car. This issue has progressivly gotten worse to the point now i cant safely drive car. I start driving and randomly the gas loses power when i press on it it wont do anything then the rpms will zoom up and down. And eventually stall out. I have to keep tryi mg g o pump the gas until it will actually work. It will also sputter alot while driving and if i leave it idle.

I have cleaned the throttle body change the idle air control valve and the throttle position sensor and the wires and plugs for it. I have changed my fuel fulter and spark plugs. I have no idea what this could be it is getting very expensive. Any ideas?