how to make money in this game??m doing misison is a compelte filure every time cuz< i'm low on chracteristic and equipmewnt (no money no equipmewnt)..that's why i dislike this type of game..
Don't know where you are in terms of the main events, but;
1) Wilfred gives you some money when you start the beach prison event
2) Several of the girls' freeroam events will give you a permanent +1 in one of the stats (whether it's strengths, intelligence, stealth etc) even when you don't have any equipment on. Take advantage of that and complete at least some of their freeroam events before attempting the contracts
3) Use Whichone's contracts walkthrough in the OP, it's quite helpful for those who are stuck with them.
4) Don't attempt to 100% these contracts in your first playthrough. It is pretty much impossible to do (unless you use cheats/mods, but those will break your game), and not meant to be played that way.
Parts of contracts are relatively easy in the beginning but parts of it are difficult until the player's MC gains more stats, and equips better equipment.
And this is achieved by subsequent replays of the contracts with higher MC stats, as well as with better equipment.
With a bit of grind with repeated playthroughs, soon you'll be able to 100% these contracts.
5) Mix in play between main game and the contracts
This is just my recommendation, but I found this to be my preferred way of playing. Instead of doing all the main game events first then trying to do all the contracts (and same for vice versa), mixing it up I found to be a better experience.
For instance, I'd do a main game event and a girl's freeroam event then focus on one or 2 contracts for a while, then go back to main game again if I get stuck on a contract (due to not enough stats etc).
And as I said in my second point, girls' freeroam does have the permanent stat increase benefits.