Additional information about withdrawal and withdrawal methods

Hello, I recently completed the tax form "w-8 ben" Because I live in Egypt. But I have some questions.

1-For me in Egypt, what is the best option out of the three for withdrawal, PayPal/Payoneer/Skrill? Which one will give me the lowest savings and the lowest taxes?

2- Aside from the Adobe Stock cut rate, which will be 15% according to the tax form, will a percentage also be cut when sending money to one of the three platforms, and another percentage when transferring money from the platforms to a credit card?

3-After all this, will a percentage will also be cut when transferring money from a Visa card to Tangible money?

4-Could I have filled out the tax form stating that I was in the United States or not, and what would have happened? "To avoid the 15% tax deduction."

5-Suppose I withdraw $30, for example. After all this, how much will be left? I feel like half the amount will fly away!