@Cress read https://support.brave.com/hc/en-us/articles/18347246446733-Changes-to-macOS-desktop-browser-requirements
As it says, 1.69.xx is the last. I’m not sure if that would be https://github.com/brave/brave-browser/releases/tag/v1.69.168 or one of the slightly earlier. But to install it would have to be through the Github.