As near as I can tell from EA the game ditches the alignment system altogether with only Paladin having something close in their oaths.

That said from the way that I've played through the EA so far my characters have fallen into NG for my Paladin, CN for my Barbarian, LE for my Bard, LN for my Wizard, and N for my Druid. So how I play it will probably depend on background and class.

Edit: On the whole I think Larion's version of the Inspiration system tied to character backgrounds will probably have a bigger impact than Alignment. A pool of 4 possible rerolls on failed skill checks/saves when needed, provided your choices reflect a party member's background, is a fantastic system and one of the better means of implementing it in a video game that I've seen.

I can't play evil. Always end up feeling bad haha. I'm always a bit chaotic, either neutral or good.

Not lawful, not evil. I can't play evil characters because I feel too bad for everyone else :(

And I can't play lawful characters because fuck authority >:3

I'm a goody two shoes. I play Lawful Good characters. I'm sure Baldur's Gate 3 is going to have a lot of gray area. Let see if I can make everyone happy...

Either Chaotic or Neutral Good. Evil is usually just kind of cringey in CRPG's

Lawful Good, of course. The only alignment that matters.

I didn't notice the game (nor 5e for that matter) having alignment choices.