How to share whatsapp on whatsapp web on desktop and whatsapp app on phone

I'm trying to implement a button that shares the current page on whatsapp, theres no issue with using the link on phone but on desktop i can't send it to whatsapp web or open whatsapp web if it's not opened yet.

i was searching for long on SO and other webpages as well on documentation, which i cant find (i only face android documentation but not web documentation for it).

i refered to https://api.whatsapp.com nut no info can be found here.

My approach is this line as i said someone posting here: How to implements whatsapp share button in website

<a href="https://api.whatsapp.com/send?text=urlencodedtext" target="_blank">Share to whatsapp</a>

i bet that this function was moved to whatsapp for business, are it?

Any help will be apreciated.

Regards