I guess there is an error code showing usually 40011 or 40021, if so you dont use a python tool to calibrate the gimbal, you download a special firmware and flash that to the quad, the firmware is dependant on the roll back version but for...
No point mentioning DJI on here pal, you could try the actual DJI forum, but most requests fall on deaf ears, but yeah i feel ya, i bought the Avata 2 thinking i could use the rc2 and was disappointed.
Also google uses a play protect system that stops apps being installed that havent come from the playstore. this can be turned off in playstore settings
The RC2 has internal storage and an SD card, both are used mainly for screen recordings and downloading files from the drone, the drone has 2gb of internal storage so for a few short videos thats enough. then you can download them to your...