Did you download AFC_Bridg expecting it to configure the Bravo autopilot keybindings? If so, I can understand why you are disappointed.
AFC_Bridge Is only to enable the lights on the Bravo. That is all. It doesn’t do any configuration or keybindings.
You don’t mention any specific YouTube videos. I don’t want to recommend any that you have viewed and discarded.
The Bravo is a sophisticated peripheral and MSFS keybindings are difficult to understand. Adding the Bravo to MSFS takes some time and patience. It took me about a day to configure my five Bravo profiles for all the different aircraft I fly mostly due to the MSFS arcane keybindings process.