> if you are not an artist, making good art is simply really hard
And if you are not a programmer, making a good game is really hard. But you can learn. If you are willing to put in the effort to develop your own sense of the aesthetic, even a small amount of time can result in huge improvements.
You don't need an "art director" and neither does this guy.
If you think your menus are ugly, find some menus that you don't think are ugly and ask yourself what it is about them that makes them not ugly. When you can answer that question with certainty and apply the answer to your own menus, that's a first step towards improvement.
PS: I spent 10 minutes on your game. It's fun.