I... I FOUND MY BUS TICKET!

I checked the car for the (still lost) portemonnaie
before the lesson in which the ticket disappeared. Should've checked it
after the lesson, because it apparently fell out of pocket while I drove to it. When i had the impression of looking at it before the lesson, I was a bit absent-minded and actually looked at another piece of paper that was in my pocket. I'm so dumb

(That finding probably doesn't sound happyfying to you, but it really does to me, because, well, 60€)