Literadio 3 Yaw Issues and Goggles Not Receiving Video

Dunno how to help you w/ your video issue, but I'll offer some insight as to the stick drift.

Stick drift on the Literadio variants is a pretty common issue I've seen a lot of people talking about and is the primary reason I avoided starting w/ a BetaFPV radio controller - ultimately it's a hardware issue that software isn't really gonna fix for you, at least not long-term. That's the tradeoff in the low price point of hardware that uses pots instead of hall effect sensors. Think of it as twisting a knob repeatedly (every time you move the stick). Eventually dust gets in there, or things shift out of alignment and you start to develop drift. You could try cleaning the drifty pot or adding a little bit of a deadzone, but in my experience once a potentiometer starts to develop drift, those solutions just buy you a little more time. Might be worth looking into hardware that uses HE sensors to gauge input values instead.