That’s Not How It Works
Currency exchange is a pain because your cash will either be worth more or less depending on where you’re going. When you go to another country, you’ll need the currency used there. You can usually exchange your money at most airports and banks before leaving your nation.
When travelers returned from Canada, they didn’t know what a currency exchange was. They said they had lost money, but their home currency was worth less than the nation they were visiting. Learning a little bit about the process is very useful when it comes to changing your money for another nation’s currency.