On Debian Linux, fonts can be downloaded and installed in the user's directory, and do not need to be installed into the protected system directories.
Ensure the local directory is available:
mkdir -p ~/.local/share/fonts
Font files can be unzipped and the .ttf files can be copied over into that directory
Refresh the font cache
fc-cache -f -v
Review the fonts:
fc-list
A number of fonts can be installed with:
apt install ttf-mscorefonts-installer fonts-aenigma
1001 Fonts has a wide range of fonts compatible with Linux.
As a side note, pixabay has a good variety of clipart selections.
