sudo apt update/sudo apt upgrade

It is actually very easy to break your install by doing this if you have made a habit of installing random .deb files from around the internet

APT can’t update things that are not in the repository and .deb files typically only work for a specific version of the OS (which is to say, they will probably work when you install them but break when you update).

You should in general never install a .deb file directly. Sometimes it might be necessary in order to install a program that the developer doesn’t support, but that lack of support should be a flashing warning light that the package will probably break something in the future.

There are ways to purge your system of orphaned .deb installs, and I suggest doing that before large upgrades