HOW DO I EXIT MY ROOM?

The door automatically locked behind you. Such hospitality.

There's a panel next to the door.

You need something thin and sharp to pry it off the wall.

Once you have discovered that you're locked in, use the dagger you found on the door on the panel.

Tap the opening behind the panel to examine it.

Looks like it's electrified. Maybe you need to close the circuit somehow?

Use the only metal thing you have on the opening.

Did you hear the click? Your door is now unlocked.