[gsdraven]

But does that not teach it that whenever it poops or reliefs itself inside it can go outside as a reward ???

Not sure how going outside is a reward. If you catch your dog going to the bathroom in the house, stop them and take them outside to finish and then bring them right back in. No reward.

If you are taking them outside and then playing a game with them then maybe they see it as a reward but honestly too much time has passed for them to associate being outside and playing with going in the house.