most of the time, you don’t! they’re built into the kernel, so you don’t need to worry about it

some hardware does need external drivers, including nvidia GPUs. this is because nvidia’s drivers are proprietary, so they can’t be bundled with the kernel.

tho i think that now, the community developed nvidia drivers that are in the kernel are good enough, but the proprietary drivers still have better performance. don’t quote me on this tho i’m too poor to have a GPU