I watched your reel and while it isn't bad, it lacks direction, with that I mean if I were " in the jury" so to say I wouldn't know what you were applying for, also I wouldn't do a breakdown for an all CG scene( to my knowledge it is only usefull when integrating CG in live footage).

I am also wondering why you are in such a hurry to enter " the industry", just enjoy the ride and keep an eye out for any opportunities that might arise on your path.
At the end of the day it's still just a job where you have to work long and hard so you better enjoy yourself .

First decide what you want to do and then make work accordingly also don't try to churn out a miljon models a day, instead focus on quality and once you have a few good pieces of work "stitch " them together and call it a reel don't try making anything fancy with great music just show work for which you are applyingand depending on which branch of VFX you have chosen, show diversity in the types of work.
They really don't care about a slick reel...since they are in the movie bussiness themselves they are really not easily impressed with a showreel.
Also try keeping it under 2 minutes and show best work first.

And last but not least don't give up on your dreams just because of a small setback, it was only a runner position ( one of the suckiest jobs there is), focus and improve on your skills and apply for a junior position instead when you' re ready.