!NoFlash has been updated specifically for WoW Classic.

Where do you find it? read this....

Curseforge is now owned by Twitch.
By installing the Twitch APP on your PC, you can search for addons from Curseforge and install them with 1 click.
Honestly, doing it any other way is basically just being a stubborn old fart.
It even helps keep them updated for you, give it a try dudes!