Help to installing KeroVee

So, I asked a web series creator how he gets he’s audio tuning from, and he said "A plugin named “KeroVee”. so I searched up KeroVee to see if I can download the plugin, but I kept running into dead ends with no tutorial to download this file, all it says is “KeroVee VST plugin download” with a .dll file. And, I’m on MAC, so this dll is not copyable to my computer’s needs.

So here are my questions:
Is KeroVee only for windows?
How can I correctly download and install effects and plugins?
Is there an official website to download KeroVee, if so can you send me the link?

KeroVee is an old 32-bit plugin, it will only work on 32-bit versions of Audacity,
(or DAWs which can run 32-bit plugins)

I believe this is the source … ソフトウェア - KeroVee 1.61 | g200kg Music & Software

So, how do I install the plugin to audacity?

It’s very old, I think it’s only compatible with Windows, (I don’t speak Mac).

Oh ok. well, is there any plugins similar to KeroVee that are compatible with Mac

The free version of Grallion allegedly works with Macs …
https://www.auburnsounds.com/products/Graillon.html

Gsnap (free) also allegedly Mac compatible …
https://gvst.uk/Downloads/GSnap

SpotOn (free) also allegedly Mac compatible …

Ancient KeroVee is has a croaky robotic quality.
Modern pitch-correction plugins don’t sound the same