American is predominantly used to mean a US national or more generally "a person born, raised, or living in the U.S."
Canadians, who are "North Americans," are predominantly culturally similar to Americans.
Mexicans, who are also "North Americans", are not culturally so similar to Americans.
So your deliberate "confusion" about the word American produced an even sillier result: "A North American (excluding Mexicans) Teenager's View on Social Media"
Fair enough. I tend to consider Mexico as Central America so I was thinking of Canada and the US as North America. For what it's worth, I live on the other side of the Atlantic - and it's been a long time since I did geography in primary school.
Canadians, who are "North Americans," are predominantly culturally similar to Americans.
Mexicans, who are also "North Americans", are not culturally so similar to Americans.
So your deliberate "confusion" about the word American produced an even sillier result: "A North American (excluding Mexicans) Teenager's View on Social Media"