Install fonts-freefont-ttf by entering the following commands in the terminal:
sudo apt update sudo apt install fonts-freefont-ttf
Description:
Freefont Serif, Sans and Mono Truetype fonts
Freefont is a set of free high-quality TrueType fonts covering the UCS character set. These fonts are similar to the widely known Helvetica, Times and Courier fonts.
Homepage: http://savannah.gnu.org/projects/freefont/
Version: 20120503-7
Section: fonts