Use your screwdriver to unscrew the drain cover/grate. If your drain doesn't have screws, it may be a "lift-and-turn" or "toe-touch" style that unscrews counter-clockwise by hand.
: Most shower drain covers either unscrew or lift right out. If it’s stuck, a flathead screwdriver can usually pry it up gently. how to clear shower drain of hair
Once a week, boil a kettle of water and pour it down the drain to melt soap scum and flush loose hair. Use your screwdriver to unscrew the drain cover/grate