Potty Training Puppies Info

I have a one year old puggle and she’s partly potty trained. I take her out as soon as i get out of bed and she does her business and i give her a treat. She also tends to go pee separatly then when she poos. She’ll pee, run inside and then i’ll see her at the door again. I’ll take her out and she’ll poo. Note that i’m not calling her after she pees, she does this herself. Also, she does know to go to the back door and whine, bark or scratch to be let out to pee or poo, but sometimes she’ll sneak away and just do her business in a hidden spot in the house. I’ve tried to minimize these spots by restricting her availability to the house but I can’t understand why she can’t hold it in or wait to be let out.

She mostly does this when I am not around. I moved back with my parents and they have been changing her dog food around because they buy cheap dog food. I attribute this to the increase in peeing and pooing because she needs to eat more to feel full and its full of salts and whatnot so she needs to drink more. Am I right? Should i go out and buy the old, better dog food myself that I used to give her and will this minimize her potty useage? And how do i get her to be 100% potty trained? I would say she’s about 70% trained but still goes when I’m not around…I was told puggles are spiteful when their masters leave but do I need to do the crate thing until she understands that is only for OUTSIDE?

Sorry for the multiple questions too…but thanks for your help in advance.

Walk her on a leash until she does both. Most dogs don’t pee and poop in the same spot. They typically pee first then walk around a bit and then poo. Definitely add crate training. After you walk her, if she hasn’t pooped and you think she should have, then crate her and about 20-30 minutes later bring her back outside and try again. This worked wonders for a stubborn manchester that we have. Go back to the good food.