Car would just turn off on me when I would stop at a red light or stop sign

Well, for about two weeks my car would just turn off on me when I would stop at a red light or stop sign. So I would turn off the car and turn it back on and it would turn on (happened to me like four times). After that it happened to me again but would not turn on anymore. I went to go get it tested and a two cylinder misfire popped up. That same day I check it out and notice there was oil in two of my spark plug, but also noticed the seal from the valve cover was broken. So I bought a new valve cover. I replaced the valve cover and bought two ignition coils with all four new spark plugs. Cleaned out both the spark plugs/ignition coils that had oil in them and after that my car turned on for that whole day. I went to AutoZone to make sure there was no more codes so I had them test it again and the same code (two cylinder misfire) and a Po445 code popped up. They told me the code would take a couple of miles for it to go away and the p0445 might be due to the two cylinder misfire so I payed no mind and went about my business. Around three am I got stuck at a store because my car would not turn on. I have been reading of what it might be and they were saying starter, fuel pump. (I have another car same make and model, 2006 that has not been working because of overheating). So I took that cars starter and replaced it with mine. I also replaced the EVAP canister (which I think was that p0445 code). At a moment my car would turn on for about thirty seconds but then turn back off. Today I was trying to hear the fuel pump sound but it seemed like my battery was drained, so I took it to AutoZone and left it there so they can charge it but called me and told me the battery was bad. So I immediately bought a new one brought it home (thinking this might have been the problem all along) and connected it to my car. I was tightening the end is to the negative and positive with a wrench. On one of the ends it sort of sparked and as of right now my car still will not turn on. I ordered a new fuel pump and currently waiting on that part to see if that is the issue.