I used to add fonts to home/.fonts Now there is no .fonts only .fontconfig with a protected file. I use custom fonts and want to add them.
Gives a good answer to your problem. If the fonts are just for your own use, you can create a .fonts folder if one does not exist and copy your fonts there. If you wish to share fonts with other users put them in a new directory in /usr/share/fonts/. LibO will pick up the new fonts the next time it starts. Peter