Your Drone is acting as if the IMU is not Calibrated. The controller thing above is certainly worth a look and could actually be a thing but I think its an IMU calibration problem.
You probably calibrated the compass needlessly. Try recalibrating the remote control. There’s probably a bit of left of centre in the left stick. It might have been caused by storing with the sticks mounted.
GET THIS ONE. Used them forever in my security business, charged thousands of batteries with them, and the best part is the STORAGE CHARGE option. This option is a MUST if you want your batteries to last...
Using aircrack-ng on your own drone's transmissions is legal. Using it to gain unauthorized access to resources on someone else's system is illegal, defined in the Computer Fraud and Abuse Act (CFAA) of 1986.