Hi i would like to know if anyone has any tips for getting out of negative money quickly. thanks
Sell a plane.
Other than that, there are none, other than to already be reliably profitable before you go into negative money, and waiting it out.
If you don't own a plane, and aren't making enough money week to week, then going more than a tiny amount into the red means you won't be coing back. Time to restart, and avoid what sent you there in the first place, most likely.
Shorter routes are better for turboprops, certainly. But routes you can reliably fill from the start make even more difference, especially in MT where you can use turboprops that are fast, with standard seating & good range. Q400, ATR 72, Saab 2000 with 48/2 or 51 seats. 5 daily short & full routes will beat 3 longer routes. But 3 longer routes that are all full will be better than 5 half full short ones. Depends where you are, and what routes you have available.