Linux Hint shows you how to install the NVIDIA drivers on Debian 11.
Install NVIDIA Drivers on Debian 11
If you have an NVIDIA GPU installed on your computer, installing the NVIDIA GPU drivers is the first thing you would want to do after installing Debian 11 on your computer. NVIDIA drivers are available in the official contrib and non-free package repositories of Debian 11. The official contrib and non-free package repositories are not enabled by default.
