If the payments ( checks ) are made out to your name, you may use your personal one. If you sell under a business name, payments will be made to that name and you will not be able to deposit them.

Well you don’t necessarily have to have a business bank account, but it is better to have one that way you can keep your business finances separate from your personal.
If you plot on keeping a excellent record than you can just use your personal

you never know what might ome up.for the small investment, I would
recommend doing it.this wa later on, u won’t wish you had one it