Why will NASA's Artemis 2 only fly around the moon, not orbit or land?

NASA landed 12 astronauts on the moon during the Apollo program more than half a century ago. So why is the upcoming Artemis 2 mission just doing a lunary fly-around?

Why will NASA's Artemis 2 only fly around the moon, not orbit or land?
NASA landed 12 astronauts on the moon during the Apollo program more than half a century ago. So why is the upcoming Artemis 2 mission just doing a lunary fly-around?