Many people are unable to receive their payments from other countries because they are using different payment process and methods.
For example: If you are doing online freelance jobs and if your clients pay through Paypal only and you don’t have a Paypal account. That time you can’t receive your payments.
Most of the countries using Paypal online payment app. There is also another online payment app like Google Pay, WePay but Paypal is very popular and faster than others.