Hi there, I am John J.D., a fellow Microsoft user like you.
I understand your frustration. This is a normal, and yes, if your friends are using Windows, they will need to pay $0.99 for the HEVC Video Extension. There used to be a free version of it here is the link: https://apps.microsoft.com/detail/9n4wgh0z6vhq?... but it has been disabled for some users and no longer works for Windows 11 if you get "This app will not work on your device" you may want to buy the paid version or you might want to try downloading VLC Media Player instead, it supports HEVC and is free to use.
Let me know how it goes or if you have any further questions or concerns.
I hope this information is helpful.
John J.D.