firefox - proper indic fonts for google docs

https://www.google.com/search?q=firefox+default+font+for+indic+change

https://kohageek.blogspot.com/2018/04/configure-firefox-browser-to-view-unicode-fonts.html

In my case, Firefox -> Hamburger menu -> Settings -> (Search for Font) -> Advanced

set separately for Devanagari, Telugu, etc.