Microsoft makes the Windows installation media available for download, but you will have to put it into a format that aligns with how you plan to use the installation files.

Secure your copy of Windows 10 ISO now before it’s gone for good. Having it ready ensures you can install or fix Windows 10 ...

The install.wim has been replaced with install.esd file format in Windows 11/10 image file downloaded using the Media Creation Tool or the Windows Upgrade Assistant.