Your store will always have one base currency, which you can choose in your Shopify admin. You can easily change how it displays by adjusting your currency formatting.
When you set up your default currency, that would need to be linked to the same destination bank account.
If your store needs to be converted into different currency countries, you can use the Best Currency Converter app.
I hope my recommendation can help you. If you have any questions, feel free to let me know.
I think using a currency converter app would be one of the best options out there.
Hope you are doing well.
You can use app like Auto Currency Switcher