openjdk-11-jre-headless installation problem on ubuntu 18.4

I am trying to install openjdk-11-jre-headless or default-jre on my ubuntu machine but no mather what I do I get some error messages while doing it.

" The following packages have unmet dependencies:
 openjdk-11-jre-headless : Depends: initscripts but it is not installable
E: Unable to correct problems, you have held broken packages " 

" The following packages have unmet dependencies:
 default-jre : Depends: default-jre-headless (= 2:1.11-68ubuntu1~18.04.1) but it is not going to be installed
               Depends: openjdk-11-jre but it is not going to be installed
E: Unable to correct problems, you have held broken packages. "

I have tried already these commands to fix the problem but no luck..

• sudo apt-get update --fix-missing
• sudo apt-get update
• sudo apt-get clean
• sudo apt-get autoremove
• sudo dpkg reconfigure -a
• sudo apt install -f

I tried the same thing with aptitude:

• aptitude install default-jre but no luck...

Any ideas how to fix the " broken package " and dependency issuses?

Detailed system information

Distributor ID: Ubuntu
Description:    Ubuntu 18.04.6 LTS
Release:        18.04
Codename:       bionic

Apt-update:

- Hit:1 example/packages/live/example bionic InRelease 
- Hit:2 ee.archive.ubuntu.com/ubuntu bionic InRelease 
- Hit:3 ee.archive.ubuntu.com/ubuntu bionic-updates InRelease 
- Hit:4 ee.archive.ubuntu.com/ubuntu bionic-backports InRelease 
- Hit:5 ee.archive.ubuntu.com/ubuntu bionic-security InRelease 
- Hit:6 ppa.launchpad.net/nginx/stable/ubuntu trusty InRelease 
- Hit:7 ppa.launchpad.net/openjdk-r/ppa/ubuntu trusty InRelease 
- Hit:8 adoptopenjdk.jfrog.io/adoptopenjdk/deb bionic InRelease 

• take note -example is a valid repo i chose to rename–

Reading package lists... Done Building dependency tree Reading state information... 
Done All packages are up to date.

Screenshot of apt-cache policy:

• apt-cache policy default-jre
• apt-cache policy default-jre-headless
• apt-cache policy openjdk-11-jre

The problem was caused:

Some the apt repositories contained outdated repositories not needed for the server and software anymore. They caused conflict.

Removing these repos from /etc/apt/sources.d/ repo.list file:

deb http://ppa.launchpad.net/nginx/stable/ubuntu trusty main deb http://ppa.launchpad.net/openjdk-r/ppa/ubuntu trusty main

After the removal the installation of default-jre and openjdk-11-headless was successful

Only this worked for me:

sudo rm /etc/apt/sources.list
sudo software-properties-gtk

and than apt update
sudo apt install default-jre

dpkg --get-selections | grep "\<hold$

If anything comes back as held fix the hold and try the install again