Denied unemployment, how do I appeal? (Nashville)

I got a denial letter last week saying I left my job voluntarily, but I was let go as a welding apprentice. I have not done a hearing before and I am nervous. If you have appealed before, what helped you prepare?

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

Stay calm and stick to facts. Mine lasted about thirty minutes and felt more like a conversation than a trial.