When I try to crank the engine the lights turn off and it does not crank

So I have a Sonic, and when I open the key everything turns on fine, dash, radio, internal lighting, but when I try to give the car a crank the lights turn off and it dos not crank. while the keys in the ignition position the engine light stays on. I plugged in a scanner, no codes, even charged the battery to make sure it was not the battery, and checked all the fuses and relays to make sure, interior and exterior, I even took the cap off of the relay. I pushed the little copper plate to the rest of the relay, and the car would start although it never ran. the car was running perfect until I turned it off at a gas station, when I got back on it would not ignite anymore. I am lost at this point, any help would be appreciated. thanks in advance.