GNU/Linux Debian Bullseye Installing Broadcom BCM4352 Driver Guide
The linked tutorial shows you step-by-step How to Install Broadcom BCM4352 Wi-fi/Bluetooth Driver in Debian Bullseye 11 GNU/Linux.
The Package Provides the Source Code for the wl Kernel Modules and makes use of the DKMS Build Utility to Install them for the Running Kernel.

GNU/Linux Debian 11 Broadcom BCM4352 Driver Installation Guide