Turn the leggings over and mend the hole. First, insert the needle into the hole to make it inconspicuous.
2.
The hole is big. Wear it directly under your pants as long trousers or cotton trousers. Don't wear it outside. Or find a pair of trousers with similar color, sew the hole and put it on.
3.
Super glue, the hole position is not obvious, put the leggings flat, find a pair of pants with similar colors, use super glue directly, and use toothpicks and other tools when sticking.
4.
When the hole is small and not scattered, you can choose transparent and colorless nail polish to smear around the hole, which can reduce the tendency of the hole to continue to expand.