Stablecoins are a shitcoin and there is no real use for them in the United States. They are centrally issued tokens which basically give you a claim on dollars in someone else’s bank account.
This could be useful for people who otherwise wouldn’t be able to access dollars, but it’s useless for anyone in the U.S. who already has abundant access to dollars. Bank settlement times are annoying, but using someone else’s account is not a good fix for that problem.
Cash App, Swan, River, and Strike are where you want to be. All four are Bitcoin only (and Cash App offers banking proxy services if you want that too)