A can of worms were opened all because I was logged out of Snapchat. I got new a phone about a month ago called the Samsung Galaxy A9 Pro. It was only sold in China and Hong Kong. When I got it it worked like anyone other Android phone, but it came with root already on it with some program called Team Win Resource Project. After discovering it had root, I got some rooted apps for it. Then, a friend wanted to log on Snapchat so he logged me out but he couldn't log on. I tried to log on and it still wouldn't work. Eventually I discovered I couldn't log on because I modified the root folder. So I tried to unroot it with SuperSU and that took me to the TWRP screen after I rebooted it. I didn't know how to get past that screen, but a video I watched showed me how to fix it (or so I thought) by installing the original firmware. After doing so, I didn't have any Google services and the play store was replaced by the Samsung store. I tried installing the Google Play store with the play services and play services framework, which only slowed down my phone ("unfortunately, play services/play services framework stopped working"). I uninstalled all play services and now I have absolutely no clue what to do or where to go to get Google Play back. Please help me.