Denied unemployment, how do I appeal? - 3 weeks in

I got a denial letter last week saying I left my job voluntarily, but I was let go as an insurance claims processor. I would rather hear the honest version than the polite one. I have not done a hearing before and I am nervous. Should I ask someone for free legal help?

Legal aid offices and some workforce centres help with unemployment hearings at no cost. A call is worth it.