the dog is most likely insecure and afraid of the attention of other dogs try dog whispering
Thet can
Try and get them to bite a rolled up newspaper or your arm, anything really so that they don't bite your neck.
Shoes, especially old ones, will smell strongly like the owner since they don't get washed. Basically, the owner has marked their territory and the dog feels obligated to protect it. My dog is...
if they bark to people they don't know.