@crazycells they can only be used on websites if they are installed and included in the site you are viewing. This basically means that unless the font is available on he remote server, it won't display to other users if they do not have it installed (but would for you if you have it installed)
This is why CSS on most websites will use system as a fallback so that the text is rendered even if the font cannot be found rather than the default of Times New Roman being displayed. System essentially uses whatever font is the default on the system viewing the website. In essence, under Windows, this would be SegoeUI. Under a Mac, it's of course different.
Importing a font into your website isn't a difficult task. It's explained very well here
However, if you'd like to include a font that isn't from Google this is still possible, but the process differs slightly - and the caveat here is that not all fonts are created equal. Some do not lend themselves very well to rendering within web pages, and so it's always best to go for "web safe" versions. For example, just try "master of puppets" (yes, Metallica) and see what happens !
In an seriousness, if you need help with fonts etc, happy to help.
thank you very much, this was helpful! I will let you know about the progress 👍