

I would wipe the disk so theres no shady things, depending on what games u play, i would install linux and use encryption if you would take this laptop to public places. Performance on linux will be much smoother. I recommend endeavouros.
EDIT: also reinstall bios/uefi firmware would be nice, probably not but there might be some spying?
I guess linux has more docummentation, but thats also nice option, is performace on bsd better than linux?