@_Jaybee the Github has the installer. It’s weird how you’re aware of something but act like it’s not the solution.
That’s because you can’t run the current installer. You need to run the older one for the last supported version. You also need to make sure you’re choosing the one that’s appropriate for your OS.
For what it’s worth, there’s been a lot of discussion on this if you had looked for things. I even have an article about it in the pinned Help guide, which you can see at How to install Brave on Windows 7 and 8