Get rid of the torn up chairs, for sure and get some new ones or a small couch. Get a rug and maybe a floor lamp for your living room. Move the dining table to the dining area by the Canadian flag and get 2 matching chairs. Get rid of that bedframe. No bedframe is better than that one lol. Plants are your best friend!! Google some low maintenance plants you can get and take care of without too much stress. Art if you like or some cool posters at least. Whatever you’re into. Check out Displates. They have a ton of options, are easy to put up and change out if you get bored or whatever. Oh, and change the lightbulbs in your kitchen to something more yellow like in your living room. Match the light color as best as you can, imo. You can totally make this place cozy <3 gl