I embed my custom fonts on my Windows desktop into the .docx file, but when I open the same .docx file in the Android app on my tablet, the embed fonts just show up as the default font!

I want the embed custom fonts display as the actual font, not the default fall-back font.

It is 2021, I can't believe this crucial feature hasn't been implemented yet! When are we going to get this feature? In ten thousand years?