To add new fonts to the Microsoft Office/Microsoft 365 suite, you must install the fonts directly in Windows. Office reads the font list from the font list in Windows.
How to Add New Fonts to Microsoft Word
Font files are all over the web, some are free and some are paid. Professional designers use services like Adobe TypeKit, which automatically installs fonts.
Beware of dubious websites offering executable installers. Use common sense; if a site is full of ads and looks questionable, it probably is.
To add a font to Windows, simply drag the file into the Fonts folder, which is typically located at c:/windows/fonts. This action will prompt Windows to install the font.
