https://wiki.debian.org/NvidiaGraphicsDrivers/

vim /etc/apt/sources.list

# Debian 12 Bookworm

deb http://deb.debian.org/debian/ bookworm main contrib non-free non-free-firmware

# Debian 11 "Bullseye"

deb http://deb.debian.org/debian/ bullseye main contrib non-free

# apt update

# apt install nvidia-driver firmware-misc-nonfree