John Singleton was 22 in Boyz n the Hood when he played the character 'Mailman (uncredited)'.
That was over 33 years ago in 1991.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
In 2019 he died aged just 51, starring in 19 films in his career, 18 of those after Boyz n the Hood was first released. If he were alive today he would be 56.
In Boyz n the Hood, I think John Singleton looks: