Help me with a social icons contact widget

Do you know these contact widgets you see on many websites these days with an icon on the bottom right corner of the website and when you click it it gives you contact options like:

Messenger
WhatsApp
Phone
etc

I have scoured the internet and didn’t find the code to do it.

Not sure how to code it myself either.

Surprised how I couldn’t find anything good yet.

Yes I know there are a bunch of services that offer this, but I just wanted to have code that I can universally apply anywhere and doesn’t look horrible.

Do you maybe have an example of website that has that? So basically they are list links, for example whatsapp button would just open WA application on your phone/pc?

Something like this:

Chaty demo page - Premio