Why can't lightning strike people? Is lightning alternating current or direct current?

Lightning is neither AC nor DC. Lightning is a pulse, and the discharge time is only one thousandth to one hundredth of a second.

The intensity of lightning is not fixed. Whether a person can be killed by lightning is related to weather, humidity, terrain and the location of the person who was killed by lightning. If the lightning intensity is not large, there are many obstacles near IP people, which can disperse some lightning energy, and the better RP may not die.