There was effort
Yes it wasn't the best game ever and no it wasn't all that scary. Horror is really hard to do especially in a five minute flash game. I was able to figure out all the puzzles with some degree of logic and the game didn't over stay its welcome being so short.
Perhaps if you focused a bit more on suspense and trickery than jump scares it would have been better, though.
Just work on the English and vary the scares and this wouldn't have been too bad of a game!