How do I avoid 3% foreign transaction fee?

Excuse me, could you please clarify how one can effectively bypass the 3% foreign transaction fee that often accompanies international purchases? Are there any specific steps, strategies, or services that you would recommend to minimize or eliminate this fee entirely? I'm particularly interested in learning about the best practices for those who frequently make cross-border transactions, such as individuals involved in cryptocurrency trading or international finance. Thank you for your time and consideration.