AI Dungeon exists, but you'll have way more fun if you find a group to play with. If there is a game store near you then they can definitely point you towards the right places (and probably host beginner-friendly events anyway). There's also Adventurer's League, which is the publisher's way to try to welcome people in to the hobby. It sacrifices some ofthe freeform nature of the game but in return you get some contacts and a pre-arranged code of conduct for everyone

They don’t have the attention span or memory to be good at being a DM, generally. I’m sure someone will figure it out in the next couple years though.

I think rolepley with LLMs is fun. They're surprisingly creative and cabable of describing fantasy settings. Though, it doesn't really compare to D&D. I mean first of all your friends are missing and so is the pizza, so it's a different experience altogether.

And the LLMs are more invested in the storytelling. They don't strictly adhere to the rulebook. And they don't do the calculations and dice rolls correctly. They'll decide to push for a resolution, happy ending or whatever they deem fit. And it's not a fair game that feels like encounters are settled by the character's abilities. It's more storytelling tropes being the deciding factor. And I believe I'm missing a proper story arc... So I think it's fun, but not D&D.

They do a terrible job of making anything coherent. Fine for making monster stat blocks or similar though.