Basically, install Windows as you normally would, but when asked for Time and Currency format, select English (World) instead of your country.
Then let the installer do its thing. Eventually, you will see a window with an ice cream cone on the floor with the words “Something went wrong” and the error message “OOBEREGION.” This cryptic message means that the “out of box experience” (OOBE) didn’t launch because it didn’t know which region to launch.
Click Skip, though, and Windows will install just fine. You won’t be prompted to buy Microsoft 365, you won’t be prompted to pay for a OneDrive subscription, and your Start menu won’t be cluttered with apps.
Do not recommend Tiny10/11. They are modified Windows ISOs and we have no way of knowing what actually was modified and if there’s anything malicious under the hood.
Besides it also completely breaks a bunch of actually useful features.
The developer behind tiny10/11 publishing scripts on his GitHub that you can use to make your own tiny windows install.