Does your dog just never do what you ask them to do? Do they maybe know how to “sit” at home, but once you take them outside they seem to forget? Is your dog not listening when you ask them to “stay”? Does your dog just ignore you when you call them to come? Is your dog just generally not paying attention to you when you’re out on a walk?
Do you have a dog that is super excited and can’t seem to calm down? Or perhaps you have a shy or anxious dog? Behaviours like jumping and chewing are natural for dogs but inappropriate for life with us humans. Any behaviour that displays any level of aggression is never safe and you should get help from a professional trainer as soon as possible.