in day 7 saved at storage room #102 and as i try to go out in the hall i get killed , i was trying to get to the room that i came in to -the laser maze .but no can do .can you help me ? i don't want to start over if i can help it ,thanks.

Yeah, you really want to make incremental saves instead of overwriting

You can fast travel within the facility so it's worth trying the travel button if you haven't already.