How can you spike faster and harder at middle

I understand you want to unlock the jump program. Please try reaching 5 points by sharing something valuable for the volleyball community. For example: - Introduce yourself, your goals and anything interesting about you - Ask questions related to volleyball & jumping - Share volleyball experiences & your own things you learned and struggled with - Share anything that could help the people inside the community to improve their body, mind or game

Hi i am Stélio 16 years old 184 cm started to play volleyball six months ago i struggle with my receiving and spiking technique also i really want to improve my jump reach 2.80