Bogs anytime gas pedal is pressed?

It idles just fine, I can leave it idling and nothing will happen. If I press the gas like a normal situation, whether it's in gear or not, the RPMs will rise maybe 200 and then roughly drop until the car goes into a complete bog. It won't idle regularly again until I shut it off and restart it. If I press the gas very slowly, I can get the RPMs to rise all the way up and if I hold them there, at like 4k, after I let off the gas pedal the RPMs won't return to normal until I turn the car off. If the car is in gear and I try pressing the gas and easing off the clutch like normal it will immediately bog. I cannot get the RPMs to rise again until I turn it off and restart it. I got a junkyard set of fuel injectors and a throttle body just to see if there was any difference but there was not. I just replaced the downstream O2 sensor hoping that was it. It was not. I don't know what it could be any help would be amazing!