floating share icon on mobile

Hello team,

I wanna add social share buttons on my website that can float on the bottom of the mobile screen so users can easily share the articles. If there's any way to do it without a plugin, then please mention the way.

If not, then please mention a plugin that I can use.

I have downloaded the Lightweight Social Icons plugin but I can only add it to the sidebars. If there's a way to use this plugin at the end of the post I'll be happy :)

Thanks