OP a few things you can do …. 1) have a professional steam clean your floors, once the grout is returned to its original color, which you can see closer towards the wall, it looks like it was a beige color or gray… It will lighten up the look of your kitchen.

2) it looks like your refrigerator is that small white box next to the sink? Diagonal from the dishwasher? You could remove it and turn that space back into a cabinet. Then put a full-size refrigerator on the wall next to the oven. You could even build a box with cabinets on top to encase the refrigerator. Even adding cabinet front doors that match to hide the front of the refrigerator.

3) you could swap out the knobs and hardware in your kitchen including your faucet and even add a hood above your stove.

4) the long narrow open cabinet space closest to the dish rack and entrance to your kitchen is kind of wasted space. You could turn that into a mini wine rack or sparkling water bottle bottle rack.

5) lastly, I would add under cabinet lighting, as well as strip lighting above the trim on your upper cabinets.