Addressing the case publicly for the first time, Bill Ready says the tragedy “guides” the firm’s work.
White House officials claim the deal will be a win for the app’s US users and American citizens.
TikTok says it will introduce measures to “strengthen our platform” although it disputes some of the findings.
Trump says a deal is done but the details have not been confirmed by China or the app’s owner ByteDance.
Ministers say software developed by the Cabinet Office has helped to ramp up fraud detection.
The video game icon has been taking shots at an old rival, but the real competition comes from newer games.
The data has been released to coincide with the launch of a new group of MPs representing creators and influencers.
Research suggests that 30 out of 47 Instagram safety tools for teens were “substantially ineffective or no longer exist”.