Just About Jacks

I have a very fat lazy uninterested jack russell female. the only time she moves is when i take her for a walk and she was bred to kill my uncle used to breed hunting jacks well when i got her I was very little and only played with her and my parents had jobs so they did not train her now I am older and can train her i trained my other dog perfectly she does everything i ask and I tried the same strategies on shelby and even other ways to and they just don’t seem to work she is very bull headed. And very dog aggressive
PLEASE HELP

My boyfriend and I just purchases a 12 week old Jack Russell puppy. He was not potty trained so we have been working to try to get him to go outside. I have followed everything I have read: taking him out when we wake up, after he eats, I was even taking him out every 1/2 hour to hour just to hope to catch him doing something good!! But it never fails, every time we go back inside he pee’s or poops somewhere in the house!! So then I immediately take him back outside but he just plays and doesn’t seem to understand why he is out there. We have taken him on long walks, hoping he will smell that other dogs are doing it, and still no luck. He just does not like to go outside. This morning my boyfriend was out with him 10 minutes and he wouldn’t go and the minute he got back into his crate then he went. We are getting really frustrated and don’t know what to do. Please help!!

My spelling should be better on this question.
I have already asked this but this is on how to help me + my pug. my mom took away my jack russell because he wasnt trained at 10 weeks, + she made me do chores instead of walking him so she said if he pooped one more time he was gone. Well he did, + my mom has given him to a friend, I miss him soo much and feel terrible, at first i blamed my mom now I am thinking is it my fault? i did everything i could in the time she gave me but now its too late + it hurts so bad. My pug is also wanting him but my mom doesn’t care. any way we could feel better, or how i could show my mom i can do it? i trained my pug i have had him for over 2 years. Thank yo for your help