Denied unemployment, how do I appeal? - any advice?

I got a denial letter last week saying I left my job voluntarily, but I was let go as a social media manager. I have read a lot of threads here and could not find my exact situation. My employer's version of events does not match mine, and I have emails that show it. Should I ask someone for free legal help?

I printed my emails in order and wrote a one-page timeline. The hearing officer kept going back to it.

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