Our friends at Repair Together (a network of over 200 repair cafes in Brussels and Wallonia in Belgium) have a good guide to exiting Windows 10, in French:
It is aimed at the individual but with suggestions to get help at a Repair Cafe for anything you are unsure about.
The visual flow chart of your options at the end of 10 is very helpful. I’ll ask if they are happy for us to translate / adapt.