I should structure the response to first point out the confusion about Windows 12/121, then direct them to the correct official source (Microsoft's website), explain that direct download links are not provided publicly for security reasons, and mention the risks of unofficial links. Also, offer to help with instructions on how to get the ISO correctly.
(rare)
The tool will then create the ISO file. This process can take some time, depending on your internet speed. Once it's finished, you'll have a complete, official Windows 11 ISO file. windows 121 iso file link