You can harden and make more private Windows10, there existen even a lot of FOSS tools to do it, like https://github.com/hellzerg/optimizer (one of the best), avoid as much as possible the MS Store and less as possible proprietary apps. In this point in Windows there is a big advantage, no other OS has the amount of FOSS than Windows, not even Linux.

Install Portmaster, with this you can controll and if need also block, every byte which go out or in, in the net traffic of every app. ts also OpenSource, only if you use also it’s SPN you need to pay a monthly fee (its like a VPN on steroids), but also without is a pretty good Tool to tame Windows https://safing.io.

Desactivate any Service and App which you don’t use (eg. the hibernation service is a big resource hog, because create a copy of every app you open, that mean, every app use the doble of RAM, and also the index service, which, at least with an SSD isn’t really needed, it only permits to find files some seconds faster in the explorer. Only with these both, yo will increase the speed of Windows 20-30% and free a lot of RAM). More if you desactivate animations, transparecies and services “to improve the user experience” crap.

Activate GodMode, with this you have access to all the settings (over 200), even the hidden ones. Its easy:

• Create a new folder anywhere you want
• Rename it to GodMode.{ED7BA470-8E54-465E-825C-99712043E01C} (copy paste this as is)

Done. The folder has change it’s icon and when you open it, you have a large list, ordered by topics, of all existing settings in Windows.

Don’t forget, although the aforementioned tools are safe, easy and intuitive to use, it is always a good idea to create a restore point before messing with the guts of Windows.