Homeless in king county Was need help with housing!

I’m currently and have been homeless for quite some time now in Kent, wa. I was recently in a program that put me in a hotel and was supposed to help get me into an apartment but all that ended up being was a break from being homeless in the streets eventually landing me right back in the streets again. The area I’m around is very dangerous. I recently just lost my best friend due to 3 unknown men shooting up our car for no reason at all. She was short in the head and died. I now have very bad PTSD and really need to be off the street into a home. Please how do I get a housing voucher.