When you create an account, most often you need to specify a phone number and confirm it with an SMS. This is mandatory, so there is no other way. If you can not specify a real number, you can use the service of a temporary virtual number to get an SMS confirmation code online. I can advise the site of the service, which I also use when necessary https://365sms.org/en/ There are many options for selecting different numbers and the prices are quite acceptable. So you can consider this option