There are two approaches that I'm aware of that work:
1) If you want to do a clean Win11 install, then download the official Win11 24H2 ISO (I haven't tried going straight to 25H2), use Rufus to write a USB flash drive with the ISO and using the appropriate tick boxes to skip hardware compatibility checks.
2) If you want to do an upgrade/repair install, then download the official ISO (again…