Denied unemployment, how do I appeal? (update)

I got a denial letter last week saying I left my job voluntarily, but I was let go as a barista. I have been trying to stay organised about it. 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.

Keep everything in writing and save the confirmation numbers. It saved me later.