Shifter won’t move, no dash lights, no break lights, trunk wont open.
Dead battery maybe?
Probably just a loose connector at the battery, if the battery itself isn’t dead.
If you never replaced the battery, that’s the first place I’d look. See if you can get a friend to jump start it. If you don’t mind a little work, take the battery out and take it to an auto parts store. They will test it and tell you whether it works or not. If it doesn’t work, buy a new one and put it in your car. If the battery isn’t faulty, then it might be a charging problem and you may need a new alternator.
The OP’s not coming back.