Can someone explain why my scene looks terrible also I didn’t do the floor yet but don’t address that
This is somebody’s bed in front of a fireplace, right? Maybe add some nicknacks on the mantle, or a picture/window on the wall. Right now it’s a lot of brown wood, with a lot of long, straight lines. Not the most interesting thing to look at.
The bump maps on the wood look stronger than they should, especially on the ceiling. And the bricks of the fireplace and wood of the wall are very close in color. At first glance I didn’t actually notice the were different materials. Some contrast might help, maybe desaturate to wood a little, or up the saturation on the bricks.
What’s your lighting set up? With the fire, I would expect a yellower light, coming mainly from that direction, with deeper shadows. What you have here looks pretty even and whiteish. It looks like you used an area light above the bed, unless that’s the fireplace reflecting up there.
Maybe also consider what mood you’re going for. Right now it reminds me of scenes in FP video games where the character wakes up at the start, not inherently terrible, but fairly bland. Did you use reference for this? It might help you to look up pics of what you’re going for (Ex: Horror cabin, Romantic scene with fireplace) to get ideas on how to sell it.
Let’s try getting rid of all lights except the fireplace and see what happens.
Change the cameras focal length - slightly less so its going wide angle looking.
Go into the cameras settings and in the viewport display turn on Thirds under the Compositional Guides. Rotate / move the camera and get the fireplace on one of the intersection points of the guide. This makes the fire a ‘point of interest’. Anything else important to the story you are making could go on another of the Composition Guides intersection points. Get completely away from the camera view is perfectly lined up with the wall setup that you have now.
Check the scale on everything. The bricks in the fireplace seem too big - which makes the room seem small. The room feels like its child sized. Don’t forget to check the size of the boards in wall and ceiling.
As already said - orange light. And put it in the fireplace. And/Or add a light fixture where the light is.
Add DOF. Depth of Field. The closest fibers and the bricks in the fireplace are in focus. That is unnatural. Again - what is the story you are creating? Have the camera focus help to tell that story.
All the previous suggestions are good, light should come from the fireplace, and if there are more lights in the room play with them a bit and find what works. Maybe there’s a window out of frame with moonlight shining in or candle light. Frontal lighting is generally flat and boring. Try to achieve gradient lighting on walls and ceiling, so they go from dark to light. Some shadows will be soft, some sharp. Also you can introduce more variations in the textures and in the width and length of the wooden boards, cracks and so on. A cabin like that could be made with different kinds of wood, different ages, maybe crooked in places. Lower the saturation, colors in the dark tend to get more grey. Look at real life references and see how many small details a scene like this would have. So basically its an art design question, not a technical blender issue. On the technical side, you can add ambient occlusion to make the corners of the room darker.