In order for you to play Cultist Simulator on Linux with minimal graphics settings, your computer must meet the following requirements
Operating System:
64-bit system; Ubuntu 20.04, Ubuntu 18.04, and CentOS 7
Processor (CPU):
2GHz or better
Memory (RAM):
1 GB RAM
Graphics Card:
1280x768 minimum resolution, OpenGL Core, post-2012 integrated graphics
Storage:
500 MB available space
Sound Card:
DirectX 9.0c compatible