I'm doing the tutorial campaign and have fallen into a debt of more than 2k.
Ther's nothing i can do afaik. Any of you guys got tips for coming back from that hole?
The exact mission is "The Good Things"

Start again is probably my solution. The tutorial missions are only basic missions: if you are able to get into severe debt in a tutorial mission, you won't have any chance of beating some of the more tougher missions of the game, and there are many of those.

Basically every mission until the one after "The Good Things", you simply can't gain money. You simply have to win before you go into debt. Not very hard at all in normal, generally I still have half the money by the time I'm done and I'm not optimising or anything, more challenging in higher difficulty modes.
Next one though, you can start sustaining yourself by selling ceramics (and then Jade products but by the time you do that it's most likely over)