Shock collar 🐕 🐶

I have a 4 month old male Doberman Pinscher named Tank that is full of life. He doesn’t know his boundaries yet but still in training. My fiancé is having a hard time keeping him potty 🚽 trained. For example he takes him out for a run or walk and they would be gone for at least 1-3hours (he takes him to the dog park) but once they get home Tank just piss all over the place😡🤯 🤦🏽‍♀️. When we have visitors we tell them to have shoes 👟 off on our carpet. Tank would chew on their shoes, or jump on our visitors, nibble on them etc....he also has an anxiety attack when we leave him. It’s so bad that we can hear him outside our front door him crying. We have little kids as well. He pays no attention to my 3 year old as she doesn’t care for him either but my son who is 1 they bond very well. But when they play tank tends to scratch my son. He’s the first dog 🐕 that we ever had problems with. We had a pit bull name lady who passed away to Parvo she was a great dog. Very calm at such a young age. But Tank I be thinking he’s kinda slow. Should we get a shock collar for him to calm him down and learn his boundaries more?

🐶Edit🐶:

We are doing the crate training with him and so far he’s not having it. He’s acting like a spoiled brat. But we’re still trying it for at least 3months. My fiancé said he already praised him for everything he does that good. He’s pretty picky on what snacks he wants. Tank doesn’t like bacon 🥓🧐😱. My fiancé thinks we should get another puppy so he can have a friend to play with, but I think 💭 tank will be a bad influence and we’re gonna have double trouble plus I’m pregnant 🤰🏽 so it’s too much right now. We’ll see how this crate training goes.