lost data

Hi, I was flying my drone all was good accept it was a little choppy at close proximity when i was flying it at the park. It was when I was hovering a tennis court and taking pictures that It suddenly lost transmission. I waited a little bit but was freaking out because it was only 400 feet...

i’m in desperate need of help so i went to Kauai Hawaii last week to record a bunch of footage with my camera, osmo action and mavic 2 pro, and today i decided to take a look at all my drone footage that i got (which was a lot) but when i plugged in my micro sd card to my pc it said i had to...