Since noone commented the jump, i will do it, although i am not a jumping form specialist or ever a fan.
It looks to me like you are traveling too much horizontally in the air, or , if you prefer, you planted too far away from the rim. Try to be a little closer, not directly underneath but much closer, and explode up.
The explanation is simple physics, the vertical force that you apply is proportional to the cosinus of the take-off angle. And cosinus is not linear.
What does that mean in simple english? If you take off with 45 angles degree, 70% of your force will be used for vertical displacement. If you change that angle to 30 degrees the percentage goes to 85%. And if you take that to 10 degrees, the percentage is 98%. Why don't we all take off under the rim? Because it will screw our mechanics, you will lose more force output than the percentage you win from the angle. So you have to find a sweet spot that is as close as possible to the rim without having to mess with your form ( decelerate, reposition, change leverages to a disadvantageous position etc ). Try one step closer, see what happens.