How can I fix the drain stopper in my tub?

To fix the drain stopper in your tub, you can start by removing the stopper and cleaning any hair or debris that may be causing it to clog. If the stopper is broken or damaged, you may need to replace it with a new one. You can find replacement stoppers at most hardware stores. If you are unsure how to remove or replace the stopper, you can consult a plumber for assistance.