If any reaction is wrong, reverse that channel in the FS-i6 (not in Betaflight).
: Insert the bind plug into the port labeled B/VCC on your receiver (e.g., FS-iA6B). flysky fs-i6 setup for quadcopter
Stock FS-i6 is only 6 channels. Flash (via a USB adapter) to unlock 14 channels. Then you can add: If any reaction is wrong, reverse that channel