Could someone help me with this?

I didn't just just throw parts at it. My vacuum advance on my distributor wasn't working so I replaced that. The wires and plugs were in horrible conditions. And needed replacement. And when o did that the electronic ignition NOx went. I tested everything and deemed it that. And the ballast board was 2 bucks and mine was starting to break. The alternator is only one year old my other one the bearing melted on it and locked up while driving. I killed the battery while the whole distributor buisness was happening so I replaced that as well. The belt were dry as a bone and I just replaced them as well. So maybe I just did everything because it just happened back to back.