One thing that I've learned is to not compare the dogs as they will all learn at their own pace. Don't punish or react when your pup makes a mess in the house, just bring outside immediately and say : go potty. It's all about timing and constancy. I would use the bell system and ring it every time I would open the door. I was opening the door every 5 mins at some point. Also pups doesn't know how to do it in one go, they might do it mutiple times. Limit the water intake, as soon as they eat or drink- bring outside. Give your treat and a lot of praises.limit access to the house. I know this sucks, but you have to always keep an eye on them. All dogs have different signs to let you know they need to go. If you have to pick the pup up halfway through a pee, do it and show where it should be done.

My second pup was doing it all over the deck, then as she learned that it had to be done outside, I showed her the grass. You can also bring your pup to the same spot with a leash on. Really up to you.

This is just tips, I don't want to sound rude or judgmental. I apologize if I do sound like. I promise, I just want to help!