Love seeing Godot games! I came here from your post asking for feedback. This was a creative interpretation of the theme. It reminded me of the game Aperture Desk Job, and had a real "I'm alone alone" creepy vibe like Half-Life. The static on the walls and floor was creative and creepy. A very simple but creative game loop. You really created an ominous horror vibe with your graphics, and the gameplay. The creepy TV turning on and playing ominous music was awesome. I immediately picked it up and sorted it to stop the music.
I would recommend having a sound for when that voice was talking to you, because I don't know if I always saw the text at the bottom of the screen. While this game was definitely a creepy experience, it wasn't very fun for me. I do not like being scared. The game play loop was repetitive, and you just die of a heart attack at the end (at least that's what happened to me). So it didn't feel like something you could win. Definitely gave a hopeless feel, so if that's what you were going for that's great. But I think if you want to get good ratings across the board in game jams, it helps for your game play itself to be fun. Two of the best games I played in this jam had 1-bit graphics, but they were fun to play.
You have a solid game loop, a really good atmosphere and vibe for your game. Well done.