Here's the shooting part and what precedes it without comments -- VIEWER WARNING: Uncut video of confrontation, shooting of Ahmaud Arbery (News4JAX). What I see is Arbery running by the right side of the truck, not having been shot at and not being blocked by anybody, when instead of continuing forward, he turns sharply to the left and crosses over and attacks Travis.
Thank you. So Ahmaud Arbery was behind the truck, and could have just kept running to the side, or, instead, run the other way.