GNU/Linux Debian Bullseye Realtek RTL8723de Driver Setup – Step-by-step Guide
How to Install Realtek RTL8723de Wireless Driver on Debian Bullseye 11.x GNU/Linux – Step by step Tutorial.
And this Realtek RTL8723de Driver Debian 11 Dkms Setup should be working on 5+ Kernels and also after a Kernel’s Upgrade.

1. Launching Terminal
Open a Terminal Shell Emulator Window:
(Press “Enter” to Execute Commands).sudo apt update
Authenticate with the User Admin Pass.
If Got “User is Not in Sudoers file” then see: How to Enable sudo.
Contents