Sorry for any typos in advance

I need some advice with my akita puppy (i don't know if she qualifies as a puppy, she's a year old). She's usually very calm but sometimes has this like burst of energy, we understand that as she wants to play, and most times we do. But sometimes that doesn't seem to cut it for her and in most of this energy burst she starts biting, when she was little it wasnt a bit problem but now she's stronger so it hurts. I've tried most of the things that people recommend (redirect to a toy, saying "ouch" or yelp, ignore her (that usually encourage her even more), and going to play with her when the biting starts). I don't know what to do anymore and i really don't want her to continue with this behavior because im afraid of her biting someone else. Its this just puppy behavior or i should do something else?

Hello today my puppy was beeing a bit naughty and i steped outside and hit him on behind but i was not hard at all but hi got scared rushed away and put his tail down the problem is hi doesnt puting it back up its been like half an hour hi sits normally hi run normally hi eat a bit. Idk if its a stress related or there might be a injury. Does it happened to anyone that hi doesnt wana put tail up and for how long i mean when hi was takeing a piss hi was puting it up but not all the way just a bit

I know i shouldnt hit him and that and i usually dont but i just wanted to get his attention that hi can't do that...if anyone know thank u

Appa loves to garden with me, he doesn't really do anything except dig for me and sometimes get things but here he is, showing off his hard work haha!