Stop worrying about the whole "alpha" thing. People get way to carried away with that from all the dog whisperer episodes. Definitely stop jabbing your puppy.
Work on training and bonding for now. Stop with the corrections. Puppies are mouthy so you're going to need to just redirect that. There's tons of info on redirection training. Keep everything positive at this age.
And sign up for a good puppy class with a trainer that knows what they're doing.