Just form your private business with your local corporation commission.
You need to understand basic corporate operations to do business, and jumping immediately into all of this extraneous work is completely unnecessary for small private businesses.
I know it is not a popular suggestion, but it can be a good choice when there’s not a whole lot of uninsurable liability, few assets, and limited working capital.
Since anyone can sue anyone for anything anyway.
YMMV…but YAGNI also often applies.
The way I do it is using Schedule C and the relates forms.
Banking is one thing a sole proprietorship simplifies because all you need is a separate personal account to use for the business and banks are happy to set one up.
If the business doesn’t generate much income you might even get away with not paying out taxes quarterly and use additional withholding instead.