You can download clean Windows 11 image from here:
WINDOWS DOWNLOAD PAGE
After booting from pendrive and installing the OS, the only thing you need to install on Minix Z100 are WiFi drivers:
INTEL DOWNLOAD PAGE
The rest of the drivers can be downloaded and installed automatically by Windows Update.
After you do it, you'll be left with only one device with no drivers in device management panel.
Just download these drivers from Dell's support page -
DELL DOWNLOAD PAGE - and after extracting them, use to install the missing driver on this last device.
This should kill all your doubts, as both the OS, and the drivers, will come from known and legal sources.
Greetings.