The easiest way to download new fonts to your iPhone is to use a third-party app. We recommend apps like iFont and Fonteer, but you can also find several in the App Store by simply searching for "fonts."
DAFONT TUTORIAL | How to Download Fonts to iPhone 2020 (FREE Fonts!) // Download Fonts to PHONTO
IFont offers free font downloads and installation, supported by advertising. You can use it to download fonts from Google Fonts, Dafont, and Fontspace. You can also use it to install fonts that you may have downloaded separately.
Download, install and open iFont.
On the main page of the app, tap 'Find fonts to install'.