In order for you to play Farming Simulator 19 on macOS with minimal graphics settings, your computer must meet the following requirements
Operating System:
requires macOS 10.13.5 or newer
Processor (CPU):
Intel Core i3-2100T @ 2.5GHz or AMD FX-4100 @3.6 GHz
Memory (RAM):
4 GB RAM
Graphics Card:
Nvidia Geforce GTX 650, AMD Radeon HD 7770 graphic card or higher (min. 2 GB VRAM, supports DX11)
Network:
Broadband Internet connection
Storage:
20 GB available space