I don’t think that does an actual rewite point. A lot of the localisation features were done using file explorer. You can even “localise” folders yourself using custom desktop.ini files. But those changes only showed in file explorer.

Now email! In exchange the standard folders such as inbox are localised, but don’t have a fixed alias. So if doing administration you need to know the language of a mailbox to know the name of say the Calendar folder, so you can update permissions.

Also check what options you have with uni IT. Some unis have student access to paid software or if you are a uni club.

I know what community this is, but is your clubhouse a registered non-profit? They can get 10 business premium licenses that include office at no cost on Microsoft 365. If you are worried about the activator it might be a less worrying route.