At the abattoir on the white mist its so frustrating, i've tried everything but i keep dying so any tips ? coz im tired

I cant leave, i got the satchel, checked the computers, ive looked at guides because idk whats up and tehy say in the satchel is the guys license plate number so once you get that, you walkout the front door, and the mission is over, i hear.. i have the satchel checked every computer and no license plate, plus to check, i go outside and nothing happens.. what did i mess up?...

Because i dont

Everytime I shoot a guy in the head or a lightbulb I have to refire at least 3 or 4 times because it doesn't hit. Am I doing something wrong? Is this an OG deus ex moment where I need to shoot precisely on their necks and level up some random skill before I can do ♥♥♥♥♥♥♥♥♥? I'm barely able to go five seconds without running out of ammo lmao...

game doesn't run with my controller, is there something I need to do?