You, and only you have to look out for your best interest.
Not contacting an attorney was your first mistake.
Don't look at the criminal justice system as your savior.
Many times its not going to work out for you the victim.
There are different types of justice.
Your only recourse is to go civil right off the bat.
Although you have witnesses, and that's good, your video shows no collision, only noises, and a bike sliding. one can only suggest you fell or dropped the bike.
I hope your injuries aren't too bad.
You should of Lawyer'd up long ago and made this monkey pay.
Anything else to the contrary no matter how you feel about it was a MISTAKE.
Whammy hates hearing people say..... Ohhh i dont want to sue, i feel sorry for the guy.
Bullsh*t says Whammy. Insurance or not if you play you have to pay.
Even if they it isnt much. Law wise he might not get convicted.
But insurance for him in the future might be impossible to get. I use this term loosely.