The answer to 'why is my bathtub clogged' is that there are several common causes, including hair, soap scum, and other debris buildup in the drain. Symptoms of a clogged bathtub include slow draining water, standing water in the tub, or even a complete blockage that prevents the tub from draining at all.
For minor clogs, you may be able to resolve the issue with a DIY solution like a drain snake, plunger, or chemical drain cleaner. However, for more stubborn clogs or if the issue persists, it's best to call a professional plumber to properly diagnose and fix the problem. They have the right tools and expertise to effectively clear the clog and ensure your bathtub drains properly again.