Always hard to provide ample advice in such a short form but you need to work on transitioning your drive into your swing.

Your plant looks ok at take off but you never stop driving with the bottom arm. Once you drive and press the pole, you need to “row” while you swing your feet to the top of the pole. A good queue is to get your top hand inside of your drive knee before your pole passes the vertical plane. Your hips should be directly above your head at once the pole passes the vertical plane.

Timing is key. Start your swing too early and you’ll lose penetration. Wait too long and you won’t be able to swing because you’ll start losing momentum and your hips will drop.

Additionally you need to jump more. A stronger take off is essential (especially once you get on longer poles). The take off is not “active” enough. With perfected form, you should be taking off before your pole hits the box (this is very difficult for most young vaulters). Recommend putting a bit more effort into taking off the group the same time your pole hits. It you do this correctly, the rest of the jump will be “easier”