If you ever plan to low bar squat again, you need to work on the following:
1. Your knees are traveling too far forward. They should stop moving forward about 2/3 of the way down on your descent, and they should not move forward as you bounce out of the hole.
2. Avoid the temptation to crane your neck up as you come out of the hole like you do beginning on the third rep. Keep your head and gaze in the same position throughout the rep. Your head position and gaze is a little too far down to begin with though.
3. You are too loose overall. Take a deep breath before each rep and stay tight the entire time even when you are pausing between reps.
4. I think your bar position is a little too low, but I can't tell for sure without a view from behind.
Good luck at your first meet!