Hi and welcome to COL.
We stopped using puppy pads/paper training very early on as we felt it taught the puppies to wee inside rather than outside.
Instead we took them outside at very regular intervals. After eating, after playing, when they woke up, after a drink etc. and if they began to sniff the floor in between those times. We stayed outside with them until they 'performed' and gave them lots of praise and a treat when they did.

If they did toilet indoors, we just cleaned it up and didn't say anything as we felt it was our fault for not watching them carefully enough, not theirs.
It is very hard work to begin with - well time consuming anyway.

We had to watch them like a hawk and I swear I was puppy trained long before they were toilet trained.

And just when you begin to think they will never get it, it all falls into place.

Good luck.