How can I register on a site that requires a German phone number to verify my account, but I live in the USA and I don't have access to purchase a German number?

Most likely, this will not be possible without a telephone number with a German code. I know that before, such registration requirements on the site could be a problem, but I can convince you that now you can find a solution to this problem very quickly and inexpensively. I know that there are special services that help SMM specialists get more verified accounts on different sites, but without having many different phone numbers. For example, here https://sms-man.com/ you will find one of these sites where you can easily get a virtual number.

It;s interesting. I'm sure I can use the way you shared with me because I've read about it a lot on the internet. I'm glad you answered me so quickly