Help beginners

So I have a question. How do people buy things from the same store more than once if you can only use the billing, shipping, etc one time per store?

Are people creating PayPal accounts and using those ? And how are you supposed to recieve the products If you ship to other addresses?

Just use your friends address lmao. Or order it to your neighbors and boonk gang it when it comes

What about payment? Because you can only use your debit card once! So how do you buy from bestbuy for example twice?