Hi and welcome
You really need to confine your pup to a smaller area and not let him have the run of the house. If you want to pee pad or paper train him then you can keep him in a small area of the kitchen with his crate in it and pee pads covering the floor area just outside of the crate. When he does his business on the pad or paper then you can praise him and give him a treat and he will learn the pad is where you want him to go.
Please dont let him have the run of the house. He could get into that habit and believe me it is hard to break them of this. I have been there. many years ago.