Appeal deadline questions after an unemployment denial, office manager here

I got a denial letter last week saying I left my job voluntarily, but I was let go as an office manager. This is my first time dealing with any of 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?

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