Is it possible to add a new Social Media Widgit?

I’m using the Storm theme, but it only provides Widgets for Facebook, Twitter, Youtube and Flickr.

I was looking for a Widget that will provide Facebook, Twitter, Youtube, Reddit and Instagram. I searched but couldn’t find anything.

It needs to be one that’s a counter too. Preferably a slider too, but that’s not too important.

Is it possible to add it to my website https://www.teachingtravel.com/home
I haven’t removed my old website that I was programming myself yet.

Thanks in advance!