Car stopped altogether randomly?

[Leavee]

Had my car stall at the worst possible moment that sent me to a panic, the conditions of the car were fairly good apart from the lower right wheel, the tank was full and I had a canister with me in case I ran out but suddenly the car just stopped dead front.

After killing the horde; the car just wouldn't start back up again, the ignition key wouldn't budge and is now stuck from what it looked like. Any tips I need to know more about cars?.