You can't uninstall Cortana (unless you are on LTSB - in which case, it's not installed) That said, you can disable Cortana (and have win + s, search up files)

You can't uninstall Cortana (unless you are on LTSB - in which case, it's not installed) That said, you can disable Cortana (and have win + s, search up files) press win + s (which should open the Cortana UI), then press the hamburger menu, go to settings, disable Cortana, and also disable web (Bing) Search.