Does Stretching and being realy loose help you jump higher?

If you stretch everynight and become very loose will that in turn help you jump higher on the basketball court and overal help you move faster?

I am 5’5-maybe 4 and i can touch the orange box bellow the basketball rim. I would love to be able to get rim. Someone give me a tip to jump higher.

ok my vertical is pretty high. and i can get hung with the ball on a rim so im close to dunking

well i have a really good jump rope
and i started using it like 3 minutes a day

well i know thats not long enough

how much should i do it every day to increase my jump?

and how long will it take to see results?

vertical jump in inches please

and how much more for tricks

i cannot palm the ball
and my wingspan is 6 ft if that helps with anything

thanks

im 5’5 and im want to dunk on a ten foot hoop i have a 3 foot vertical jump any helpful tips on how to dunk or any excrise that will help me to jump to a dunk on a ten foot hoop and jump to vertical jump of 4foot-5foot leap