Bladder control training for Adult rescued dog

We recently adopted 2 rescued Golden retrievers, rescued from a home breeder. One is around 2 years other one is 8 to 9 months. We got to know that they were enclosed in the balcony and use to do pee and potty in the balcony itself. No walks or anything. Now it has been 1 month with us and we are doing 4 to 5 walks every day. Still we are observing that they dont seem to hold if they have to pee in between the walks. They just go wherever they are. Any tips to improve the situation.

We have placed a pee pad where the elder one mostly goes. She sometimes tries to target it.

(Not a first time pet parent, we had a Golden who recently passed away at 14 due to lymphoma)