Chasing in a truck and cutting him off so he has to turn away, having someone else cut him off at another point, and then working themselves ahead of him to cut him off again. That isn't in the video, but that is how the McMichaels described the events. That fits the definition of pursuit to me. Does it somehow not fit your definition? If not, what definition of "pursuit" are you using that does not include chasing, cutting off, chasing again, and putting yourself in the path of the person being pursued? Will the jurors be able to see those descriptions that the McMichaels themselves gave?
Arbery had been chased by the McMichaels already, and had been cut off so that he had to turn around at least twice. When he got to the front of the truck, he went at the younger McMichael, who had exited the truck and appeared to be making his way to cut Arbery off on foot, with a gun in his hands.
McMichael was not walking to hunt turkeys with his shotgun, when he was attacked by a random man from the side of the road. He had been chasing Arbery and intended to stop him. (based on their own admission)
I will use basic definitions that maybe you can understand and let's see if they fit.
Pursue -- chase. Did the McMichaels chase Arbery, yes or no? Well see that fits the entire arguments I have been making about pursue.
Approach -- move closer to. Did McMichael move closer to or further away from Arbery? Well see that fits the entire arguments I have been making about approach.
You can believe that I am twisting definitions and making things sound like something that they were not. The McMichaels did pursue Arbery. They said so themselves. Are you going to argue with their own words? The younger McMichael did approach Arbery with a gun in his hands because he moved closer to Arbery while holding a gun. Are you going to argue that McMichael was moving away from Arbery?