Libre Office 5, the help file tells me:
Open a text document, choose Tools - Options - LibreOffice Writer - Basic Fonts (Western) & Basic Fonts (CTL)
I then change the fonts to what I want. I want Tahoma for every single font, as it supports Thai as well as English for my needs.
I have trouble understanding what to do next? Do I just click OK at the bottom of that dialog box?
I done this about ten times now, then I close writer and it asks me if I want to save the document? I don’t, because all I wanted to do was change the default fonts, so I click No.
Load writer again, new document, and it all same Liberation Serif stuff
I even tried saving the document after changing the fonts, in case that was necessary, but to no avail.
I’ve never had any difficulty changing default fonts in earlier Libre office versions.