First and foremost STOP quadriderm. It’s a steroid containing cream and would cause more harm than good. You need antifungal medications like itraconazole, terminating luliconazole etc. you can contact me if you want the exact dosing or regimens and the brand names of products. Use loose fitting clothes. Avoid sharing of towels. Reduce the intake of sweets. Make sure your skin is completely dry after bath.