How can I set a downloaded font that's from online as a default on my phone?

[ireallylikepigsokay]

hi all! everyone know who to set a font that I've downloaded from online and set on phone as default. I extract font and nothing happens. 

[EdithCheetoPuff]

Apk is a file to download. 2.1 is the update number to download

[ireallylikepigsokay]

And then I get the font for free