Sigh….. Does anyone know how to prevent ingrown toenails? I finally got rid of them over the summer, and now…

Sigh….. Does anyone know how to prevent ingrown toenails? I finally got rid of them over the summer, and now that it’s getting cold in Canada I had to start wearing closed toe shoes outside. After wearing them for 2 weeks the ingrowns are back…. I already have enough issues with my feet, I don’t need another one. I can’t afford a new pair of shoes right now….