Install xfonts-cyrillic by entering the following commands in the terminal:
sudo apt update sudo apt install xfonts-cyrillic
Description:
Cyrillic fonts for X
xfonts-cyrillic provides a set of fonts using the Cyrillic alphabet for X servers. In most cases it is desirable to have the X font server (xfs) and/or an X server installed to make the fonts available to X clients.
Version: 1:1.0.4
Section: universe/x11