Hi ghersenn,
My name is Pedro. I'm an Independent Advisor trying to help.
You can get it from here:
https://www.realtek.com/en/downloads
Take a look at this article as well.
https://www.thewindowsclub.com/download-reinsta...
Note: This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.
Regards.