Denied unemployment, how do I appeal? after 11 years as an office manager

I got a denial letter last week saying I left my job voluntarily, but I was let go as an office manager. I am in Columbus, in case local advice matters. 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.