It is bundled natively with macOS and iOS as part of Apple’s regional language support. How to Get Telugu MN Font
You cannot install system-wide custom fonts on non-jailbroken iOS or unrooted Android, but you can use Telugu MN within specific apps. telugu mn font install
Some users have reported that after major Windows updates, non-Unicode fonts, including some Telugu fonts, may stop functioning properly in specific applications like Photoshop. It is bundled natively with macOS and iOS
What (e.g., Word, Premiere Pro, Figma) are you trying to use the font in? including some Telugu fonts
Open Microsoft Word or Notepad, type in Telugu, and search the font dropdown menu for "Telugu MN". How to Install on macOS