Hey, welcome aboard my fellow Korean
This is just my personal opinion, but I would say the best weapon class is polearms. This includes both halberds and spears. These two weapons do the most damage (lower hit points the most) but they are also heavy and require much arm strength.
The second best would be whips. They won't take away as many hit points, but they are much more accurate, which increases the chances of taking off the enemy's limbs or head. They are also light so they don't require much strength and allow you to train your dexterity