I also faced this problem after started growing it is not going only in one particular place

My Beagle - Benji is 9 months old now. I trained him Pee/Poop when he was 7 months old. If you want Rio to pee in bathroom, I suggest you to keep high valued treats box or package in front of bathroom so you can give a treat immediately showing a treat box when Rio pee inside bathroom. Consistently take Rio to bathroom when he wakes up from Nap or sleep and keep your bathroom door always open. After many attempts if Rio still pee inside just scold him raising your voice high and show him the place where he want to pee and he get a high valued treat.

I show him the treats box by making sound with that in front of bathroom. So he get to know if i pee inside I'm going to get a treat😀

Thank you Saikumar for the suggestions, can we do the same for poop training?

Yes but you have take him after eating or by signals(like Sniffing all around walking or running fast) your dogs makes before poop

Take him a walk before feeding and again take a walk after 3 to 5 mins after feeding check whether he is pee & poop on which time according to that you need to take him to restroom for minimum of 5 days then he will automatically trained for pee & poop.mainly use some treats for Rio after pee & poop