I just use windows 10 unactivated
have done for years, I did have it cracked to show up as activated, but a recent win10 update that slipped by me, screwed that up, it wants me to download and run win11 for free now, so maybe download win10 onto a usb from MS website, and see if you can upgrade to win11 from there for free too?
If I really wanted to run win11 from fresh, I would just run it unactivated, not hard to download a MS OS onto a USB now