Skydiving Emergency - Reserve parachute deployment [ Fail -2020 ]

Everything seemed to be going very well, we were about to jump from a plane from 3000 meters and about 35 seconds of free fall. The instructor seemed very confident and was joking to the GoPro. We jump and start to fall in free fall, really an incredible feeling. A few seconds later the instructor opens the parachute, and we celebrated that everything had gone well ... but suddenly I feel that the instructor is no longer so happy, and begins to look up worried, he realizes their lines are tangled, while with one of his hands, he tries to undo the parachute that had opened badly. At that moment the instructor wraps my legs with his, and activates the emergency parachute. We fall again in free fall about 100 more meters until the reserve parachute opens. Luckily it was just a scare.