reverse appeal 2023

I need help filing an appeal to hopefully reverse a conviction in Pinal Co .Az ! I was led to the slaughter by a court appointed attorney, who told me not to worry....but did nothing? I would have been better off representing myself. The states only witness was the police officer who arrested me,and he lied on the stand. ! If my attorney would have questioned the police officer on the stand, he would have been able to prove the officer was lying. His testimony did not match his body camera, case over !! But he just sat there at the table and did nothing. Im 75 years old,now Ihave a felony, and on 3 year probation....I need some help........David Word