So you are a Python developer using MAC with ARM (M1 - M4) processors, but you need/want to develop a desktop app with https://flet.dev/ for x86 on Windows?
Then you came to the right place. But buckle up, it will be a bumpy ride!
Since https://github.com/dockur/windows is not supported for Mac you will need a different solution to run Windows on Mac. And if you don't want to pay money for Parallels, I recommend to use VMware Fusion.