(Android) Package Name Conflict when i build a new app from a duplicated project.

Hey Guys hope you are doing well , So i'm facing a big issue actually and i dont know what is causing this . I have made a game , which include Google Admob and Facebook audience network . everything work good .

However when i try to make a new game , what i do is that i duplicate the previous project for some reasons my new game is close to this one and i want to keep all the settings of the previous project as well . and im planning to do more version of this game so probably i will duplicate it more than a time .

the thing is that im changing everything Bundle Id , new key store , app name , company name , but i cannot install the new game without deleting the previous one , it keep saying that there is a conflict .

May someone help me please ?