How do I transfer large sums of money internationally?

As a frequent trader in the cryptocurrency market, I often need to transfer large sums of money internationally. Could you please explain the best way to do this? I've heard that using cryptocurrencies can be a secure and efficient method, but I'm not entirely sure how to proceed. Could you provide a step-by-step guide on how to make these transfers using cryptocurrencies? Additionally, are there any fees or limits associated with these transfers? And how can I ensure the safety and security of my transactions? Thank you for your help.