I think that UI actually does look pretty good! There are a couple of things I could think of suggesting though, but it’s up to you if you want to consider them!
I personally think that the UI would look a lot more detailed if you added a rocky/rough texture onto the UI. It would give it more of a “creative feeling” if you know what I mean.
(Here is an example of what I’m talking about)
The font actually looks fine! I would just recommend adding a bigger font featuring the title of the game on the top of all the UI, following the same style.
Other than that, the shadows on the font look really good! I would just add some drop shadow outside the frame to give it more of a 3D look, and maybe try adding a cool-coloured colour correction effect for the blurred background!
Anyways, I hope you find these suggestions useful for your game’s UI!