Quadcopter crash on the first mission after auto-tuning

Good evening, dear forum members! I encountered such a problem - after performing autotune, I sent the quadcopter on an automatic mission (takeoff - flight to the point - return in RTL mode), the quadcopter successfully took off, flew to the point, arrived at the home point and then the most interesting thing began - during landing in RTL mode, strong swinging began, the drone began to behave unpredictably, did two somersaults, after which I managed to switch it to PosHold mode and land it with grief. Unfortunately, there is no flight log, since there is a wi-fi module and the flash drive was also not in the controller, but there is an autotune log, I ask experienced guys to look at it and maybe suggest something useful. Thanks in advance.
P.s. Flight controller pixhawk 6c holybro, gps M9N, motors t-motor MN6007 II kv320 antigravity, esc t-motor alpha 60A, power module pm02, propellers t-motor 22 inches, homemade frame made of aluminum with a diagonal of 93 centimeters.Tell me where I can upload a file with logs for review and help?