Install fonts-ddc-uchen by entering the following commands in the terminal:
sudo apt update sudo apt install fonts-ddc-uchen
Description:
ddc Dzongkha Development Commission free OpenType Tibetan font
This is a free Tibetan OpenType Font, created by Christopher John Fynn for the Dzongkha Development Commission.
Homepage: http://www.dzongkha.gov.bt/IT/download/fonts/
Version: 1.0-1
Section: universe/fonts