Once you have the crappy Win-10 or 11, it’s hard to get all that junk out.
I’m still running Win-7 Pro x64 on a superfast commercial-industrial grade, 2009 HP Compaq 6000 Pro Microtower, with another identical unit as a spare from my office.
I love Win-7 Pro x64. Best windows yet.
My machine says it came with Windows 7.
Perhaps saving everything and doing a restore could bring it back.