Please stop 'tapping' him in the nose, the only thing he will learn from this is that you are unpredictable and that you hurt him.
Also, please do NOT use a spray bottle on him, you risk scaring him, but not teaching him what you need him to learn.
You need to stop thinking about what he shouldn't be doing, turn it on it's head and think about what you want him to learn. So, for example, if he jumps up, rather than try and teach him not to jump up, teach him a behaviour that you can reward. So when he has all 4 feet on the floor, reward him. If he has already learnt to jump up, you can engineer him having his feet on the floor, by throwing a handful of treats onto the floor as you come in. Then as he is busy looking for them, you can reward him for having his feet on the floor and not jumping at you.
In terms of chewing you dd's toys, then management is the key here. Keep the dog and the toys separated. You can use a child gate to keep him away from the toys while she's playing and then clear them away before letting the dog back into the room.
When you have time to supervise him, you can give him a chew or a stuffed kong to eat on his bed while the toys are being played with. This teaches him to stay in his bed (and he's being rewarded by having the chew/kong). When you can't supervise him, put him the other side of the gate. Again, you can make this nice for him by giving him a chew/kong.
In terms of walking him, use a harness with a front and back ring and a double ended lead to teach him to walk nicely. Perfect Fit or Mekuti are 2 brands that work well.
If you can't put the time and effort in to train him, then rehome him responsibly. Would the breeder take him back, or a breed specific rescue?