If parents can position themselves as a best friends or closest person to their teenager, that teenager will share what they find out there and ask for the suggestion to them. They will not trying something that they don't know for sure and can handle their curiosity better than the other children.
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To be able to be like that, parents really have to be good examples and friends for children, but the process of becoming the child's main friend also depends on how the education pattern is carried out.
Because many children are also reluctant to tell their parents all their problems on the grounds that they do not want someone to know.
And children who grow up have a high and unstable ego level, so parents really have to understand what their children need.