This is the reason I gave up on google ads for my android apps back in 2015. I turned off all 18+ content and it kept on showing sex and gambling ads to users.

This is the reason I gave up on google ads for my android apps back in 2015. I turned off all 18+ content and it kept on showing sex and gambling ads to users. The advertisers probably categorized themselves as entertainment and didn't check the correct boxes and I couldn't be bothered hunting all of them.