Reset Windows 10 laptop so that at the end only Windows 10 is on it?

I sold my laptop and would like to reset it so that only windows 10 remains on the laptop, so all files and the like should be gone.

https://tipps.computerbild.de/software/windows/windows-10-auf-werkseinstellung-zuruecksetzen-275631.html

You can do this in the settings. I don't know where.

Settings update / security and then recovery