Downloading drivers is a Windows thing, the Linux kernel already includes almost every driver you will ever need. But Debian stable's kernel is getting old now and it doesn't include drivers for devices introduced after January 2019, newer kernels are available from the buster-backports repositories:
viewtopic.php?f=16&t=139003But almost all wireless devices need non-free firmware, which is not included in the official Debian releases:
viewtopic.php?f=16&t=142808