The Font Awesome allows the use of other fonts in its library
The Font Awesome library is linked to an HTML document using the link tag. The library can be linked from a CDN or saved and linked to a local file.
Using bootstrap CDN is recommended
<head>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/@fortawesome/fontawesome-free@5.15.4/css/fontawesome.min.css">
</head>