How to buy BTC from an ATM machine?

Could you please explain the process of purchasing BTC from an ATM machine? I'm curious about the steps involved and any specific requirements I might need to fulfill. Also, is it safe to use ATM machines for buying cryptocurrency? What are the risks involved, and how can I minimize them? Additionally, are there any fees associated with using ATM machines for BTC purchases, and if so, how much can I expect to pay? I would appreciate a detailed breakdown of the entire process. Thank you for your assistance.