You can’t use the DJI racing goggles on your standard analogue racing drones. Those goggles run a proprietary closed loop system designed for DJI gear. Depending on your budget, there are many analogue goggles available starting from $100 right up to $1000 for high end Fatshark complete with diversity modules, antennas etc. I have a pair of Fatshark dominator v3 goggles which work just fine and I’ve seen them second hand for about $250 AUD. If you want to go digital HD be prepared to spend up big with goggles, air units and a suitable quad frame to plonk them into. I have a set of DJI HD goggles and the experience in my opinion is way ahead of analogue. Expensive for sure but I love flying my quads and I’m prepared to invest in my all consuming hobby. Weird heh?
Maybe look at the EV 800 goggles to start with, they’re pretty good without having to give up a kidney to get you started.