Cannot Update, Upgrade install or remove anything. Broken Ubuntu 19.04. Help needed.

[scrypt]

okay.. so, i appreciate the replies but im still unsure how and what i need to do to fix my original problem, could someone kindly tell me how to fix this please ??

[scrypt]

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http://ppa.launchpad.net/clipgrab-team/ppa/ubuntu disco Release

Thank-you very much for your help.
the above worked as far as i commented out :
but, i cant find :
http://ppa.launchpad.net/clipgrab-team/ppa/ubuntu[/URL] disco Release[
Although I'm having difficulty opening and editing /etc/apt/sources.list.d.
When i use :
sudo nano /etc/apt/sources.list.d
Opens an empty terminal window stating that /etc/apt/sources.list.d
Is a directory. So, how do i edit that ?

Im also still a little unsure howto edit the output when i ran your earlier command :

find /etc/apt -name '*.list' -exec bash -c 'echo -e "\n$1\n"; cat -n "$1"' _ '{}' \;

I can see alot more ppa's id like to remove in the given output when i run the above command
How do i open and edit the
find /etc/apt -name '*.list' -exec bash -c 'echo -e "\n$1\n"; cat -n "$1"' _ '{}' \;
output ?
Also when i run sudo apt update i get this error :

E: The repository 'http://ppa.launchpad.net/clipgrab-team/ppa/ubuntu disco Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.

As i mentioned i cant seem to find The repository 'http://ppa.launchpad.net/clipgrab-team/ppa/ubuntu disco Release.
Can you tell me how to find and remove that please ?

[oldfred]

Now each ppa you add, creates a new folder/file under /etc/apt/sources.list.d.

ls -l /etc/apt/sources.list.d

You also posted it in your post #8

        /etc/apt/sources.list.d/clipgrab-team-ubuntu-ppa-disco.list 
   
  1    deb http://ppa.launchpad.net/clipgrab-team/ppa/ubuntu disco main
 2    # deb-src http://ppa.launchpad.net/clipgrab-team/ppa/ubuntu disco main

But you have many (too many?) ppa installed.
Generally when you upgrade you remove all ppas and all proprietary drivers as new version may not need then or they are not available for the new version.

[dapidc-brambang]

You can edit
/etc/apt/sources.list.d/clipgrab-team-ubuntu-ppa-disco.list

comment the first line then save.