Upgrade Debian 10 to 11 and Solve sudo Issue

Debian 11 bullseye ships with several popular desktop applications and environments. It now includes the desktop environments:
Gnome 3.38,
KDE Plasma 5.20,
LXDE 11,
LXQt 0.16,
MATE 1.24,
Xfce 4.16.
Debian 11 stable comes with some crucial improvements over Debian 10 (Buster).
So why you are waiting for? Upgrade from Debian 10 Buster to 11 Bullseye without fear of breaking system. Up-gradation process is so easy and straightforward.
Read the Process: simplifytech.x...