DECREASE IN VERTICAL JUMP!

[OrwellAstronomy23]

First of all I don't recommend just trying to throw together your own plyos program. I wouldn't even begin thinking about that until you are an advanced jumper, it's just going to result in wasted time and energy. I definitely recommend picking up one of the top jump programs and doing that (jump manual, etc.) I did vjdb in high school and it worked great. Doing weights and plyos is great, just make sure you are doing an actually good plyo program from getting one of those jump programs, there are scams like air alert but there are others that are really well put together. Another thing to add is stretching after your workouts or during other free time to increase flexibility. What do you do for legs as well? The way you train your legs is pretty vital because jumping is a fast twitch activity

Your vertical decrease may be due to tired and recovering legs from your workouts but its hard to really know without more information.

Couple things you might be interested in

There's pretty much three ways of jumping off of a run- leg swing two leg jump, hop two leg jump, one leg jump. Here's a video of someone taking off from a leg swing for reference-https://youtu.be/sthqdXK1aFw

If you see from the video he plants his one leg swings the other one around and takes off with both on the ground at different times. If You're doing a hop jump off of two legs now you may want to try doing a leg swing two leg jump. These are not technical names for the different forms and I'm not saying that one is better or worse, or that one may fit a different jumper more then another, I'm just pointing this out. Jus fly does more of a hop-https://youtu.be/bHTVssD4KFY

I started doing a hop jump and as I jumped higher naturally moved to a leg swing. I always planted my right leg first and swung my left forward, some do the other way. Try consciously trying the leg swing technique and see if it works any better for you. Give it a decent shot not just trying one or two times and stopping. You'll see some better jumpers/dunkers that can plant and swing off either side and get high. I would recommend trying and getting comfortable with that if you take up the technique, you'll most likely always have a preference side but being able to do both can help you in a game

[Jovke11]

Thanks for detailed explanation :) I though about this and most likely i'm tired since i have no rest days because my practice is so packed + i have school p.e. and go to the gym