The answer to 'why is my shower clogged' is that a clogged shower is often caused by a buildup of hair, soap scum, and other debris in the drain. Common symptoms include slow draining water, standing water in the shower, and reduced water flow. Some solutions to try first include using a drain snake or plunger to clear the clog, or using a baking soda and vinegar solution to break down the buildup.
However, if the clog is severe or keeps recurring, it's best to call a professional plumber. They have the tools and expertise to thoroughly clean the drain, identify the root cause, and prevent future clogs. DIY methods may temporarily clear the drain, but a plumber can provide a more permanent solution.