Hi Abhibav,
Sorry for the late reply.
Since fontawesome extra resources like fonts, css etc it is not packaged with the plugin and hence loaded separately from a CDN.
If your theme is already loading fontawesome or wish to load the fontawesome on your own you can stop WP Socializer from loading fontawesome.
Go to WP Socializer -> Settings –> and set fa_icons
in “CSS/JS to not to load in any page” like below.
Now you can load fontawesome (v5) as needed in your website.