Car keeps stalling

The car ran fine but the check engine light was on, had codes checked and an O2 sensor and oil pressure sensor. Reminder that the great ran perfectly fine. I changed the oil pressure sensor and harness for it. Seemed good for a bit then stalled out, thought I ran out of gas because the light was on (this car is new to me) said twenty miles to empty. Had gas brought to me, started right up, went to gas station filled up, went and had the codes cleared by mechanic, reminded me. That I need a 02 sensor so the check engine light would come on. Back on but I shouldn't notice it run any different, seemed okay again, then was stuttering but not stalling a few times to now stalling all the time. It wasn't throwing any codes for a while then threw like 7or 8 codes all related to the 02 sensors. We're able to change the back two hoping not to have to replace all took it for a test drive and this time my car didn't stall but a voltage indicator flashed, and I had no throttle, but the engine was still running, kind of rough like. It threw another code for a module I believe. I unplugged the battery for a few minutes and tried again. It hasn't done that type of stall again but still regular stalling and throwing all codes again for the 02 sensors. Will 02 sensors really cause all these issues? We're changing the front two today and hope it's fine. When the car is running all the gauges are fine, oil, temperature, voltage.