Tips on how to make my UI look better

So I’m a programmer but I’m creating a game all by myself and I’m always wondering my why UI looks so dang ugly.

I usually use flat dark gray-ish colors (my preferred color pallet) and I have rounding on ALL UI objects. For text I always go with Gotham bold and text scaled.

Here’s a reference to my usual UI design:
https://i.gyazo.com/59ea70c293329a3336aea9051cb5e72f.png

So please tell me on what I can do to make it look better! :smiley: