If you can "Wiggle battery cables" then that's your problem. Battery cables shouldn't wiggle. They should be bolted down tight to the battery.
Hi so time to get it looked at and spend some money on it.
Get that thing to a competent repair shop! The damn thing is liable to die in heavy traffic and cause you to die, too.
his is an ignition switch issue if it is occurring as you described.
Oldsmobile 88 year 98 every now and then my car won't start and I wiggle battery cables then starts, after 20 miles of driving it randomly dies while driving then turns back on