Appeal deadline questions after an unemployment denial after 6 years as a security officer

I got a denial letter last week saying I left my job voluntarily, but I was let go as a security officer. I do not usually post, so bear with me. 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?

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