How to fix The following packages were automatically installed and are no longer required in APT

Use the --dry-run flag to see which packages will be removed without actually removing them. This is the safest approach to verify you're not removing anything important:

sudo apt autoremove --dry-run

Review the list of packages carefully to ensure none of them are critical for your system.

Once you've reviewed the list and confirmed it's safe, execute the autoremove command to remove the unused packages and free up disk space:

sudo apt autoremove

You may be prompted to confirm the removal. Press 'y' and Enter to proceed.

If you want to also remove configuration files associated with the removed packages, use the --purge flag:

sudo apt autoremove --purge

This is optional but recommended for a complete cleanup.

If APT marks a package as auto-removable but you want to keep it, mark it as manually installed:

sudo apt-mark manual package-name

This prevents the package from being removed in future autoremove operations.

To see all packages currently marked as automatically installed on your system:

apt-mark showauto

You can pipe this to grep to filter for specific packages if needed.