I cant get my 9 week old puppy to go potty outside

We just got a 9 week old puppy she absolutely will not go potty outside. It doesnt matter how long or how often we take her out. This morning I spent a whole hour outside with her trying to get her to go. She was in the bathroom all night and there was no pee or poop in there this morning, so I knew she had to go. I picked her up and carried her directly outside and we stayed out for an hour, I was telling her to go potty, trying to redirect her when she got distracted, giving her space so she didn't feel crowded by me. A few times I thought she would go because she started sniffing around a lot in certain spots, but then she would stop and run right to the door and ask to go back in. She did this 5 or 6 times. I finally gave up and after about 30 seconds of being in the house she peed on the floor. The only advice I keep getting is just "use positive reinforcement" but theres nothing to positively reinforce. We have had her for almost a week and she has not gone potty outside a single time since shes been here. I dont know what im supposed to do at this point to let her know that she needs to go potty outside and not in the house