First, opt out of every Microsoft reporting option during the install process.
This prevents Windows from sending much, including preventing the sending memory dumps that could contain personal info to microsoft.
If you want to go further, I like using this program (has a gui)
https://github.com/Sycnex/Windows10Debloater
That program can remove apps like the built in games. It can remove onedrive, cortana, and completely remove the reports to microsoft (telemetry), in addition to other things.
I would use malwarebytes (free works) to keep things clean.