I reinstalled wow and I no longer have D: \ WorldofWarcraft \ World of Warcraft \ …
folders under nowhere somewhere in the folder addons … it just doesn’t exist … 
Help please…
We actually have a good FAQ about addons over on the US Forums that you might want to check out - https://us.forums.blizzard.com/en/wow/t/faq-installing-troubleshooting-addons/24531
If the Addon folder is not there at all you can create it yourself, just make sure it is inside the Interface folder 