u/HoneyPuzzleheaded597

Hello eveyone. I've recently moved to Hamburg as an exchange student, and am interested in getting a flexible job, preferably shift-base, not only to make some extra money but also to practice my german.
I have experience as a bartender, so I think that should help, but I'd be interested to do any sort of work really. I have searched around the internet, but the vast majority of jobs I've found require some form of longer-term contract which would unfortunately be a dealbreaker for me.
So, I was wondering where I should look. I do already keep an eye on ZenJob, but there aren't that many opportunities, especially in the gastronomy/hospitality sector.
I speak fluent english and portuguese, and have a B1 in german (currently taking B2 classes).
Thanks in advance!