1) You ask if anybody is there...and don't get an answer, so you do the most logical thing possible. You go down to the basement. By yourself, of course.
2) Doesn't matter if it's a house or a car, because your keys don't work! You try and try and TRY but your fingers just won't grasp onto it properly. And it seems like the lock is moving too, because you keep stabbing the key into it...and missing.
3) That getaway car--you know the one you just barely made it into? You had a head start, but now that you've finally gotten the key inserted, well, shit. The engine of your recent model sedan--which has started faithfully at every other time--has become uncooperative. No matter how many times you turn the key, the engine just won't turn over. Now that monster/murderer/etc is right outside your car window...
4) You're running for your life! Except, one of your shoelaces is untied, or a tree root comes up out of nowhere and hooks onto your toe OR possibly you've just become really clumsy, because you TRIP and fall. Now you're scrambling around, desperately trying to remember how to walk, so you do a backwards crab-walk instead (because that always works).
5) Flashlight/electricity goes out. No cell service. 'Nuff said.
Annoyed by the 2nd person POV yet, LOL? Reminds me of those old 'Choose Your On Adventure' books. Yep, I probably just labeled myself old by mentioning those. So...what other plot devices do we see commonly in horror movies?