Linux Mint 19.3 and Fonts
How to install Fonts on Linux Mint 19.3
single font
Microsoft Fonts
Many Fonts at once
Commands used in video:
sudo fc-cache -f -v
If you don't want to use ROOT :
Create a folder called (.fonts) in your home directory - if you don't already have one and drop the font files in there.
You need to enable to see hidden files and folders, because every folder starts with (.) is a hidden folder.
Still you need to run the command above.