Why I can't burn Windows 11 ISO with Disk Utility app?
There are different types of ISO files, Windows, Linux, macOS. And not a single app can write all ISO images. In fact, it depends on what kind of ISO file you are trying to burn.
UUByte ISO Editor: Best for Windows 11 and Windows 10 ISO
UNetBootin: Best for Linux and Unix based ISO
Etcher: Best for macOS based ISO.