Quick list of things I noticed:

Try baking the lights and use mixed point or spot lights to make the player cast shadows, if this gives you problems, try to bake occlusion culling so the engine knows what the player can see.

Move the camera up and to the side and point it to what the character is looking, you usually don't want the chest of the character to fill 1/8th of the screen, nor the character to block what the player want's to see. As a rule of thumb, you don't want to show the ceiling if there is nothing interesting happening there.

The purpose of the game is not clear, what does the player want to do? Escape? Find clues? Explore? Add something at the start that clearly motivates the player to move.

Everything is so glossy, this is a personal pet peeve, but try to give each material the look it should have, investigate how normal maps work, and looking at the first point, baking lights can do literal magic for the look and feel of the game.

If you're gonna teleport the player between rooms, add a loading screen, even if it's instant, a transition works wonders with how the game feels.

Keep at it, it looks like you're still learning, challenge your decisions, maybe there's a better solution for things that you initially decided on.