Dictionaries may be wrong but there are example sentences of their words for please:
https://en.wiktionary.org/wiki/vennligst https://en.wiktionary.org/wiki/sn%C3%A4lla#Swedish
"I've never heard of anyone sending a physical thank you card after a job interview or something similar," she said
Is that a thing? I've never heard of that neither.
I've never really learned in school neither. I usually read through the material just before the test. I'm a bit jealous of people who can just learn a new language or something in their own time.