Not just the languages that you learned in school, but what languages were spoken around you, or within your family?
In a nutshell: I grew up in the North of the Netherlands. My mother speaks Frisian (a minority language), and I grew up in a place where people spoke Low-Saxon (another minority language) alongside Dutch.
It also happened to be close to the German border, which meant we had a lot of German kids in our school that we would communicate with, sometimes even playdates across the border.
Then of course, English was everywhere in media.
Later in high school, we also had to take French (alongside English and German).
I'd love to hear more about the languages that you were exposed to or grew up around in Europe!