Chaotic Neutral is the alignment most players will pick because they see it as they see it as a way to be unrestricted to act without a care for consequences. If you're doing anything other than a Dungeon Crawl the NPCs have some level of "real " reaction to character actions. To a player who has primarily played board game RPGS or something like an Elder Scrolls game or Fallout this can be a jarring. The world "cares" about your behavior.

If they let fireballs fly in the middle of an inn, it's reasonable to assume the city watch is going to have some questions. If they flee the city, players should not be surprised if there are wanted posters up proclaiming a reward for capture and the guards may be on heightened alert.

Chaotic Neutral characters and media, particularly film & TV, tend to "grow" throughout the films. Han Solo is arguably Chaotic Neutral when we first met him, but not by the end of the third film; Tony stark starts in what you could categorize as Chaotic Neutral. But character arcs need growth and since they're usually the protagonist, they move towards being more selfsacrificing and empathetic.

But in D&D the party is more like an ensemble cast movie. The central question isn't "will this character grow out of their flaws" it's "will this group of disparate individuals use their individual strengths to be more than the sum of the parts and triumph?"

Knowing that, it's fine if the person wants to play Chaotic Evil you're not a bad person for playing an evil character.

You're a bad person for knocking over my soda onto my DM notes. (JK, mostly)

00:00 Intro
00:49 What Chaotic Neutral is not
03:13 What is Chaotic?
05:12 What is Neutrality (Good Vs. Evil)
08:54 Chaotic Neutral (finally)
14:11 Why (some) players write CN, instead of CE