Home Edition also works with no problem, but if you want to use Windows for professional reasons, it would be nice to buy a Professional Edition. But there’s no problem buying a Home, it works with UE5 and Nanite. If you want to make sure if it’s compatible with UE5, you can ask questions via Microsoft forums, or those who use it with UE5. Too sad you don’t find a Pro where you live. There’s a Windows 10, 11 ISO that you can download from Microsoft and install from a clean installation. When you install it, they give you the option to put in a Windows Product Key or leave it blank to buy later the Product Key. You can install it completely, but it will prompt you to say that your Windows hasn’t been activated yet. The ISO will not update your system but install it clean .