HELP ME PLEASE!

When I was young I spent a lot of my time running and I used to get athletes foot until like 2010 then it became this and my foot has looked like this ever since..two of the toenails grow really thick and one is black (might be because I stubbed it so many times but this was years ago) any ways I am really wanting to wear heels for my graduation and I need to figure out how to get rid of this NOW I’m not living my life like this anymore always hiding my foot ( ps. My other foot is perfectly normal