In Austria, where I’m from, sex ed in school gets a brief introduction at age 10 when learning about the human anatomy, gradually learning more in biology class. Before ending middle school, there’s a mandatory intensive sex ed course, at least that was the thing 17 years ago.
Condoms were primarily advertised as medical products for preventing from sexual diseases, and only secondly as pregnancy preventions.
1 in 10 has had sex with 14 years old in my country, keep it safe, better at home with condoms than in the woods without. If they want to, they’ll find a way.