I'm wondering why the text for the name & dialogue don't line up inside of the boxes, and are floating awkwardly between textbox & background. It looks misaligned - and like a mistake.
If you pushed the text over to the right a bit, it would look a lot cleaner & easier to read (like this):
I would also recommend making the font for the names bigger. I increased the size slightly in the image above but you could probably go even a little bit bigger than this. Since it is a display font - meaning they are meant to call attention to something & should not be used in long blocks of copy) - they are not always legible at smaller sizes.
Another thing that I'm seeing is the quick menu at the bottom - it's a little bit hard to read (though I'm guessing you probably did this to show the button's inactive/idle state). You might want to consider darkening either the button backgrounds, or the icons to create more contrast and make it easier for players to see and read each button.
If you want to go above and beyond, consider having either all icons or all text for the buttons. Right now, you've got a mixture of both, which is inconsistent. For save & load icons, there are free sites you can use to find them such as
flaticon and
freepik, as long as you give credit to the creators. I would recommend icons over text since the buttons themselves are already quite small and icons are a lot easier to read than text will be in this situation.
You could also try desaturating the redness of the textbox - right now it seems to be the most vibrant and saturated thing on the screen - whereas the other art assets are a little bit more muted.
Here's a rough example I created to show the difference with a less saturated/slightly darker textbox:
Hope this helps! The tone you achieved with the rusted/faded background and metal gear button elements are quite nice and lend themselves to the art assets and atmosphere of the game.