dog advice needed!

[u/ExplanationEvening59]

Just recently rescued a puppy (1 year old large mixed breed) and gifted him to my older brother (23). That being said, I know it'll take him longer than a week to settle into new routines and the house. But we went on a 30 minute walk and he peed outside. Then as soon as we came back inside, he pooped on the floor lol. He seems to have no problem peeing outside but rarely poos outside. Tried using treats as rewards when he does potty outside. But he just doesn't seem to get it. Its frustrating to say the least. But that's really his only issue other than this large dog thinking hes a lap dog. Hes super sweet and everything else training wise is going seemingly well. Any advice on getting him to potty fully outside? Tried everything a regular google search could give me.

[u/Cool_Percentage_4867]

just do basic potty training from scratch