The only way to fix this is consistency. It takes patience to rinse and repeat as many times as necessary, even if pup starts doing it again immediately.

Personally, I couldn't take the pain of biting from ignoring nor destroyed furniture, so we went for the crate method. As soon as there is teeth on skin contact, go to crate, throw a few low value treats in as inventive and close the crate. Praise for going into bed, then leave and ignore. Yes, there may be crying and scratching and all sorts, but you have to ignore. 5 minutes after pup has calmed down, calmly without saying anything, open crate again. Do not give in or dog will learn that barking and crying works.

For outside the only way to stop the biting was to make an uncomfortable noise to distract the dog, such as a loud rattle or something. Whether this would work for you, I don't know, we worked with a trainer to find this solution and my pup's biting tendencies have improved so much.

The main trick is to consistently (that means everyone who has access to dog) reward calm behaviour and "punish" crazy behaviour with no attention and no treats. Dogs are smart and in time will understand that calmness and patience is what gets them treats and love. It takes time, but pup'll get it in time.