For a self-made font, especially with all the needed characters for French, it is pretty good. I'd say the issue is more the size than the font itself.
For the controls, I'm not suggesting to allow free movement. I think that you should simply map them to the existing buttons. If you press right, and the button to turn right is on screen, then it is the same as pressing the button. If the button is not visible, then nothing happens. Pressing up is the same as pressing confirm to go forward.
I do acknowledge that I played alone rather than against someone, and that does impact the feel of the game. I did try to view it with that in mind and how I'd feel playing with someone else. I was going to ask my partner to play if I thought we'd enjoy doing so, but it did not draw me enough to do so. I also acknowledge that it is not quite my kind of game, so for the target audience, maybe it is more enjoyable I should have mentioned this in my original feedback so you can better judge my thoughts on that aspect.