Issues with ROS Noetic Install

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Hi all,

I'm a bit of a newbie with both Linux/Ubuntu OS and ROS.

I've tried to install ROS Noetic via the guide here. But keep running into what seems to be a circular error.

I found the error by being prompted by the software update, it stated.

Check if you are using third party repositories. If so disable them, since they are a common source of problems. Furthermore run the following command in a Terminal: apt-get install -f Transaction failed: The package system is broken The following packages have unmet dependencies:

python3-rosdep-modules: Depends: python3:any (>= 3.4~) but it is a virtual package
Depends: python3-rospkg-modules (>= 1.3.0) but it is not installed
Depends: python3-catkin-pkg-modules (>= 0.4.0) but it is not installed
Depends: python3-rosdistro-modules (>= 0.7.5) but it is not installed
ros-noetic-rospack: Depends: libc6 (>= 2.14) but 2.31-0ubuntu9.2 is installed
Depends: libgcc-s1 (>= 3.0) but 10.3.0-1ubuntu1~20.04 is installed
Depends: libpython3.8 (>= 3.8.2) but 3.8.10-0ubuntu1~20.04 is installed
Depends: libstdc++6 (>= 5.2) but 10.3.0-1ubuntu1~20.04 is installed
Depends: libtinyxml2-6a (>= 5.0.0) but 7.0.0+dfsg-1build1 is installed
Depends: python3-catkin-pkg-modules but it is not installed
ros-noetic-rqt-gui: Depends: python3-rospkg-modules but it is not installed
ros-noetic-rqt-robot-monitor: Depends: python3-rospkg-modules but it is not installed

As recommended I tried to use the command

sudo apt --fix-broken install

Among many forms such as

sudo install apt --fix-broken

and also without the 'sudo' prefix

They all result with the output of

(Reading database ... 236564 files and directories currently installed.)
Preparing to unpack .../python3-catkin-pkg-modules_0.4.23-1_all.deb ...
Unpacking python3-catkin-pkg-modules (0.4.23-1) ...
dpkg: error processing archive /var/cache/apt/archives/python3-catkin-pkg-modules_0.4.23-1_all.deb (--unpack):
trying to overwrite '/usr/lib/python3/dist-packages/catkin_pkg/__init__.py', which is also in package python3-catkin-pkg 0.4.16-1
Preparing to unpack .../python3-rospkg-modules_1.3.0-1_all.deb ...
Unpacking python3-rospkg-modules (1.3.0-1) ...
dpkg: error processing archive /var/cache/apt/archives/python3-rospkg-modules_1.
3.0-1_all.deb (--unpack): trying to overwrite '/usr/lib/python3/dist-packages/rospkg/__init__.py', which is also in package python3-rospkg 1.2.3-1
Preparing to unpack .../python3-rosdistro-modules_0.8.3-1_all.deb ...
Unpacking python3-rosdistro-modules (0.8.3-1) ...
dpkg: error processing archive /var/cache/apt/archives/python3-rosdistro-modules_0.8.3-1_all.deb (--unpack): trying to overwrite '/usr/lib/python3/dist-packages/rosdistro/__init__.py', which is also in package python3-rosdistro 0.8.0-1
Errors were encountered while processing:
/var/cache/apt/archives/python3-catkin-pkg-modules_0.4.23-1_all.deb
/var/cache/apt/archives/python3-rospkg-modules_1.3.0-1_all.deb
/var/cache/apt/archives/python3-rosdistro-modules_0.8.3-1_all.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)

I've then tried to install the python3-rospkg using

sudo apt-get install python3-rospkg

This outputs

Reading package lists... Done
Building dependency tree
Reading state information... Done
You might want to run 'apt --fix-broken install' to correct these.
The following packages have unmet dependencies:
python3-rosdep-modules : Depends: python3-rospkg-modules (>= 1.3.0) but it is not going to ...