Denied unemployment, how do I appeal? - first time posting

My claim was denied after 17 weeks of waiting, and the letter says I have a short window to appeal. I worked as a hotel front-desk agent before this. 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?

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