Do you have an ambient track there? maybe it’s just how the background music sounds. If I recall correctly, there was some noise like error noise, when I was getting too close to the walls.
Camera control - no problem, I struggle with this myself, collision is tricky. In Unreal engine 5.6 there are upcoming new templates, maybe they made it work by default there. Your not-dev did a good jab haha
For jam it looks fine to me, if you want specifically glass there are glass textures hidden in some freebies. I use this pack but it is not professional license free nowadays, it used to be a monthly freebie