To answer your question, instead of being a cryptic bitch:
Tap the pitchfork icon (blue square with a pitchfork in it) in upper right corner of the game screen, then tap settings icon (yellow square with a gear in it) which is found in the lower right corner of that screen, in the next screen even you should be able to find the settings icons easily enough.

That’s a pretty damn stupid quest. “Go searching for a setting that, instead of being right on the screen like most games, we’ve hidden behind a menu within a menu that we also never trained you to find.”
And what’s with the ads in this game that totally bypass your privacy mode and the fact that your sound’s down and play at full volume?