The easiest way to change your fonts to a different font family is to use the plugin:
This plugin allows you to choose from all the Google fonts. Please keep in mind that the more fonts you use, the longer it takes your pages to load.
- Install and activate the plugin.
- Go to Appearance > Customize > Fonts Plugin
- There are Basic settings with 3 options; this is the easiest
- Base Typography
- Headings Typography
- Then if you need a particular section different from the Basic Settings, you can go to that page in the customizer and choose Advanced to customize any section of the page.