Denied unemployment, how do I appeal? after 16 years as a customer-service rep

My claim was denied after 15 weeks of waiting, and the letter says I have a short window to appeal. There are 16 people counting on me, so I am trying to be careful. 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.