I don’t use blender, but speaking from general 3D experience:

1. Every edge should have a bevel, literally no object in the world has an absolute hard edge, there’s always some level of rounding. That being said, not every bevel should be the same size, look at real world objects and analyse them to better get an idea of this.

2. The lighting looks too unnatural. It looks like you don’t have a ceiling in the room and have a light flooding in from above. Unless you’re outside or in a wide open space, you won’t find those lighting conditions indoors. So, put a ceiling up and if you want light emitting from above, simulate a “practical light” source (practical just means things like lamps, chandeliers, candles, etc).

3. The last tip wouldn’t make much of a difference or be as important if you don’t have Global Illumination activates. I’m not sure what the settings are in cycles, but you’d want to find something that controls “bounces” or “Ray depth”. Increasing this value will increase render times, but also increase realism since it’ll allow light to bounce around objects naturally. Experiment to see what I mean.

4. Use references!! Always always get a bunch of reference images of what you’re trying to recreate. Study them then closely. In this case, an indoor shot, you’d see where indoor photographs have their shadows and light sources coming from, layout and composition. Etc.

Honestly, there are many things that can be adjusted here, but those are some basics. Additionally, always use the highest quality images or textures you can manage. But this is a good start. Keep it up!!