addon help for classic wow

[Kanegasi]

Will It Classic is a link aggregation site for addons that either work in classic or are actively maintained for classic. It does not host any addons, it just tracks addons hosted on here, Curse, github, and their own sites.

As for the amount of addons here versus Curse, that's on the authors. No addon site collects addons, which you aren't supposed to do. The authors themselves have to upload their addons.

Finally, for your install issue, retail addons are installed under World of Warcraft\_retail_\Interface\AddOns. If you want to install addons for classic, you go to World of Warcraft\_classic_\Interface\AddOns.