Which one of the following is correct sentence?

Despite the increase in crime, punishments are still less strict than they should be.

Despite the increase in crime, punishments are still less stricter than they should be.

Despite the increase in crime, punishments are stricter than they should be

. In spite of the increase in crime, still less stricter than they should be

. In spite of the increase in crime, punishments are less stricte than they should be.