This Seeking Tech guide will explain how you can farm money quickly in Sly 2: Band of Thieves (2024) on PS5 and PS4.
Use the following video as a guide:
For the first step, make sure you complete the RC Combat Club mission in Episode 7.
You can then return to the same cabin. There should be four guards in this location that you can easily pickpocket. You can exit and re-enter immediately to respawn them with full pockets.
Make sure you sell any loot you stole to quickly build up your cash reserve.