Is it possible to download an older version of Bridge that is compatible with macOS Sierra 10.12?
It is, but then you have to use a older version of PS, and a older version of ACR.
Can't mix and match.
Isn't progress wonderful........
Nothing wrong with old if it works for what you do. @Adobe
It's quite sad the path adobe/apple has taken. With the unpredicable nature of our world right now, I can always count on my CS6 DVD a 2009 imac, 2008 mac pro and a Canon 1Ds II.
The last version of Bridge to support macOS 10.12 Sierra is Bridge 2019 (version 9). This can no longer be installed from the Creative Cloud desktop app because Adobe supports only the current version and one version back. Bridge 2019 is two versions back; last fall’s release of Bridge 2021 pushed Bridge 2019 off the list.
Instead, you can try downloading the Bridge 2019 installer from ProDesignTools.