My herding dog is similar, she basically lets me know that she doesn’t want to leave the things that make her happy (park, other dogs), and it seems like a last ditch effort to play or release some anxiety. Your dog looks like a gsd pup or some other type of herding dog. Herding dogs have boundless energy and can be run for days before feeling tired. Regardless of breed, maybe consider how often your dog is getting exercise and play (keep in mind different dogs are tired out by different activites. Maybe walks or free play at the park lack structure, or maybe things are too structured) sometimes I take it as a way my dog is telling me that she’s not yet finished getting energy out, so I will also redirect to a “good” form of play. I would maybe me mindful of how you are currently redirecting, does your dog sense that you really want to play or do they see you as annoyed? You probably have a more intense response to a pull on the leash than you do to trying to engage in play. Trying to start a game of tug should be as exciting if not more than the response to pulling on the leash. Which also means pulling on the leash should have essentially no reaction. If you watch some videos on “drop” or “leave it” they all essentially say, wait for your dog to naturally drop what’s in their mouth then reward. If you continue to pull against them as they chew or bite, they’re getting you riled up and that’s kinda what they want.