Headcanon that the only two who can use weapons are Princey and Morality. Roman obviously uses a sword, and Patton learned to shoot a bow and arrow as a camp councilor or something.
Roman has tried to teach the others, but Morality kept getting distracted, Anxiety refused, and Logan just wasn’t very good, too stiff in his movements.
Morality has never tried to teach anyone. He thought the chance of something breaking or some getting hurt was too high