Anxious Rescue Dog Potty Training

First time rescue dog owner looking for advice on potty training: I just adopted a 1 year old rescue on Saturday and she seems warmed up to me and my apartment. She has no issues eating & drinking and we’ve been having fun playing together…however she is too anxious to leave my apartment and enter the hallway/dog run. I understand this will take time to build confidence, and I have pee pads in the interim, but she has not used them yet, so she just looks for places to pee/poop. Should I continue trying to get her to go outside, her it being so anxious in a new environment? Am I supposed to let her pee wherever she wants in the apartment and then try placing the pad there, even if it’s an inconvenient location (a kitchen)? Any recommendations on next steps or places I can look for guidance? I feel a bit lost because while I understand I need to take things slow, I don’t want her peeing on my floor for potentially weeks or months (if the 3-3-3 guideline is what I’m going off) either.