Random sounds playing when opening recently-downloaded apps

I have an iPhone 11 and recently, I downloaded a game. The following day I opened it to play, random music started playing in the background (which did NOT sound like it was part of the game) and suddenly a woman was shouting “HEEEEELP!!” *crying noises*. Even if I clicked on a level to play it, the sounds still wouldn’t stop. I thought it was a bug from the game so I deleted it and reached out to the game developers. However, earlier I downloaded a different app and when I opened it, the sounds started playing in the background again. I exited the app and reopened it and the sounds were gone. Please help me with this issue. I’m still kinda freaked out about it until now.