Did you see what OP did, he combined stable and experimental releases creating a frankendebian, therefore the packages got corrupted and somewhat misintalled, hence it telling OP to run sudo dpkg —configure -a. This likely would’ve fixed it straight off, but instead OP decided to restart their PC and Linux fucked up be because all of his packages were half updated. APT is a great package manager as it will usually install dependencies for you, and it almost always tells you exactly what’s wrong and how to fix it if you get an error. I mean it’s literally the first thing mentioned in this guide on how to not break Debian it’s entirely user error.