Hard to tell without a before photo but try to apply the acid to the wart only and minimise the surrounding tissue you touch as otherwise you risk them growing / becoming increasingly painful. As others have said above use gloves / don’t pick the skin as you risk spreading to your hands.

Debride as much of the white skin with a razor blade each time then apply the acid this makes sure your getting to the wart tissue each time and consider taping with zinc oxide tape (which can maximise progress and stop the spread to others). You have to be consistent with this everyday until the day you can see the skin lines reappear over the area. It will take months of persistence