No start my infiniti i 30 with no lights coming on dashn

While driving I stopped at the store turned the car to accessories. A couple minutes later I tried starting it up and it wouldn’t turn over. I didn’t use the jumper box figuring the battery was dead turn the key and I got nothing no lights no accessories no click nothing. I replace the battery I replaced a fuse on the positive battery cable 120a still wouldn’t start replace the ignition switch still wouldn’t start I’m open to suggestions. Keep in mind after all of these minor repairs I still got no power no accessories no lights nothing.