Got a denial letter for unemployment, what now? - first time posting

My claim was denied after 25 weeks of waiting, and the letter says I have a short window to appeal. I do not usually post, so bear with me. I have not done a hearing before and I am nervous. Did you bring documents or only talk?

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

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