Layout and color help for my new space

[RiceGold8787]

Just moved into a cozy 90s bungalow and I'm excited but clueless on how to make the living room feel more open and inviting. It's got a corner fireplace, built-in shelves, and one big window but the layout feels a bit off. Thinking of adding a rug and maybe swapping out some furniture.

Any suggestions on what kind of furnitures should I get? Also, the color of the wall is gray, what color should I change it to make it look bigger and not too dark inside? Thanks!

 

[Maxie1]

Go with light, neutral wall colors like soft white or warm beige to brighten things up, you can choose modular or low-profile furniture to keep the space feeling open, also add mirrors to reflect natural light.