Adware/Malware Infection on iPhone

I’m suffering from a adware/Malware/Virus infection on my iPhone. Several days ago I redownloaded a game app I’ve played before, I opened the game and had to step away for a sec. When I came back I see an ‘Amazon-enter your information to win an iPad’ type of ad site (the url is d2lqr8Inhqn0mi.cloudfront.net), I know that it is a scam website so I closed it immediately. Weird thing is that the scam site (same content different url) have been popping up/getting transferred to randomly since then whenever I play a game (not the same game app I played initially. I’ve deleted that game app and it happened to the next game app I played, I’ve deleted almost all the game apps in my phone because they are all infected. Also, most of these game apps are created by different developers. I doubt they are all paid by this scam site to run the ad). I’ve done a ton of research and tried to clear all Safari histories and website data, I’ve tried reset my phone to factory settings, I’ve tried deleting all iCloud Drive documents & downloads, I’ve tried every solution I can find on the internet…NOTHING WORKS! The scam website still pops up/gets transferred to randomly when I play games. I’ve also reached out to Apple support and they were unable to fix the issue as well. I’m so frustrated with this and I truly think it is some sort of virus or code that got input to my phone. Can someone please please help me?