Any advice for me pls I'm searching for a sweet mission ☺

Pick a Robbery, preferably Farm Robbery to start with if you want frequent successes, and focus on it until you reach 100% Job Skill, then you'll be able to Prestige that Job (up to 10 times), which will reset your Skill, but it'll allow you to either:

• Reduce the time it takes to complete the Job by 10% (up to 50%).
• Increase the maximum rewards it gives you by 20% (up to 100%).

At Prestige 10 you can pretty easily earn tens of millions a day if you're really active! Just sell all of the Fertilizer on the La Paz Market or through the Trade Chat at a similar price to what you see it at on the Market.

Other things you can do for extra cash are:

• Buy 25 Points from Mateo's Antiques per day for £45,000 each. They sell for nearly 5x more on the La Paz Market.
• Buy 25 of any grenades per day from Armed Surplus. Those also sell for several times more on the Market!