This had a solid base but some general game design techniques could have helped here.
-I thought the main menu was frozen since my mouse cursor was on my second monitor. Maybe lock the player's mouse to the screen (with option to release lock via "esc" key) when you are using this type of gimmick. Or just don't have that effect on the main menu. Try to reduce barriers of entry to the gameplay as much as possible. (it is a cool effect, just needed to be setup more friendly for the player)
-The goal of the game seemed a little unclear. I know your game description mentioned not to fall for false exits, but maybe it could have said something like "you are a girl trapped in a abandoned house. Her only way out is to find the hidden exit in the closet (this is just example text, use what would work for your game/story). This helps guide the player without outright telling them how to exactly figure out the mystery.
-Art direction could have helped with guiding the player as well. Maybe path ways of blood leading towards where the player needs to go. Or you find more destroyed furniture as you get closer to where you need to go. This helps indicate to the player they are on the right path with the added benefit of adding more suspense to the player, since those visual can really mess with the players mind.
I hope this feedback helps you continue your game dev journey!