i want to know, if the Google Fonts are saved locally within the WordPress theme or the Google Servers are always contacted. Why do i ask? Google Fonts might be none GDPR compliant when retrieved from Google Webservers. Therefore they should be stored locally within the Website Servers.
Google Fonts is loaded via server not from within the theme and since it will only collect little to no information you can use it. However, if you do not want that at all then, maybe if you can code that on your own then, you can enqueue those locally via child theme and use as needed for your site. Additionally, pro theme do have system fonts options, which will load the fonts locally installed in your computer and probably make the site little bit faster. Hope you are clear on these. Thanks.