This trophy is eazy-peezy
At rank 12 you’ll unlock the 5 classic heists (not Doomsday, Casino, or Cayo Perico). Now you can either join a setup mission by an green invite that pops up on the side of screen from a random or friend, the QuickJob app on your in-game phone can bring you either to a heist setup or finale, or if you’re going for the rest of the trophies you can buy yourself a high-end apartment (cheapest being $200,000) pay about $10,000 to set up the Fleeca Job and complete the easiest setup mission in the game.