Looking to buy a PC

Hey all, I’ve become quite interested in buying a PC, however I don’t want to spend much as I have a macbook for uni and don’t game heaps.

I want a PC because I want to be able to run Minecraft with good shaders and distant horizons mod, and perhaps explore other games too as my mac can barely run minecraft(with any shaders or too many mods) or sims 4.

Any advice? I’m completely new to PC gaming and computers etc so I’m not familiar with anything at all. Thanks!!