I was using TechBench to download ISO’s from MS without having to change my useragent.
Sadly it looks like the project has been retired in favour of their Files project, but trawling through that to find entries that actually have download links is a royal pain in the ass.
If anyone has a tip on easily finding the latest download for each Windows version then I’d love to hear it.
Edit: Massgrave seems to be current best option: https://massgrave.dev/genuine-installation-media.html
Apparently, you don’t.