a man standing in a doorway holding a door open

Young man comes home from office, hcarrying laptop bag on his back, prepares dinner, scrolls Instagram before going to sleep, locks the main door, he turns back , wants to make sure it's closed, re checks lock again and again and again, does the same with gas cylinder, goes to sleep but then suddenly a masked man unlocks main door as it is open and kills him, in another scene gas cylinder remains on overnight, he lights a cigarette in the morning after waking up near kitchen and gas cylinder explodes , then suddenly he wakes up, checks the door, door is locked, checks gas cylinder, gas cylinder valve is off,he punches himself and realises all this was a dream, this short movie has a message that majority of the things we worry about never tend to happen, please add background music as per scene and situation and while he is thinking about door lock and gas cylinder there should be a voice mimicing as he is speaking to himself