This is good advice for everyone, but especially good advice for minors. Stay out of explicitly adult spaces. Be wary on platforms that aren't outright stated to be for children. The internet as a whole can never be fully sanitised according to your tastes, no matter how various governments may try. You should not feel safe trusting private information with strangers or online acquaintances. There is no hidden "tell" for who is or is not an abuser. Abusive behaviour is the warning sign for abuse, not hobbies, appearance, outward personality (charming or awkward), gender or sexual identity. Avoid content that upsets you as much as you can, but it cannot be completely eradicated. As long as you are proactive, however, you can seriously reduce the amount of upsetting content you see. Do that. Do not purposefully seek out content that is harmful to you psychologically. Do not seek out dangerous situations. Please try to stay safe. If you DO believe someone is a predator, avoid them at all costs. Do not interact with them. Block them on all platforms. If you or someone you know is being directly sent sexual messages or material by an adult, report it to the authorities.