The answer to 'how to unclog shower' is to first try a simple DIY approach using a plunger or drain cleaning tool. If that doesn't work, you may need to use a drain snake or auger to remove the clog. For more stubborn clogs, you may need to disassemble the drain or call a professional plumber.
Start by removing the shower drain cover and using a plunger to try and dislodge the clog. Push down firmly and pull up quickly to create suction. You can also try using a drain cleaning tool like a zip-it tool to pull out hair and debris. If the clog is deeper in the pipe, you'll need to use a drain snake or auger to reach it. Feed the end of the snake down the drain and crank it clockwise to work through the blockage. Be careful not to force it too hard, as you could damage the pipes. If these DIY methods don't work, it's best to call in a professional plumber who can inspect the pipes and use specialized equipment to clear the clog.