Cannot install catkin

edit

I tried to install parrot drone simulator but failed, because some packages were missing and I could not lauch simulator with catkin_make. Then I decided to install ros noetic desktop full using guide on the official site, and then catkin via sudo apt-get install catkin. I failed and got this message:

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-catkin-pkg-modules (>= 0.4.0) but it is not going to be installed
                          Depends: python3-rosdistro-modules (>= 0.7.5) but it is not going to be installed
 python3-rospkg-modules : Depends: python3-catkin-pkg-modules but it is not going to be installed
 ros-noetic-rospack : Depends: python3-catkin-pkg-modules but it is not going to be installed
W: Target Packages (main/binary-amd64/Packages) is configured multiple times in /etc/apt/sources.list.d/ros-focal.list:1 and /etc/apt/sources.list.d/ros-latest.list:1
W: Target Packages (main/binary-i386/Packages) is configured multiple times in /etc/apt/sources.list.d/ros-focal.list:1 and /etc/apt/sources.list.d/ros-latest.list:1
W: Target Packages (main/binary-all/Packages) is configured multiple times in /etc/apt/sources.list.d/ros-focal.list:1 and /etc/apt/sources.list.d/ros-latest.list:1
W: Target Translations (main/i18n/Translation-en_US) is configured multiple times in /etc/apt/sources.list.d/ros-focal.list:1 and /etc/apt/sources.list.d/ros-latest.list:1
W: Target Translations (main/i18n/Translation-en) is configured multiple times in /etc/apt/sources.list.d/ros-focal.list:1 and /etc/apt/sources.list.d/ros-latest.list:1
W: Target DEP-11 (main/dep11/Components-amd64.yml) is configured multiple times in /etc/apt/sources.list.d/ros-focal.list:1 and /etc/apt/sources.list.d/ros-latest.list:1
W: Target DEP-11 (main/dep11/Components-all.yml) is configured multiple times in /etc/apt/sources.list.d/ros-focal.list:1 and /etc/apt/sources.list.d/ros-latest.list:1
W: Target CNF (main/cnf/Commands-amd64) is configured multiple times in /etc/apt/sources.list.d/ros-focal.list:1 and /etc/apt/sources.list.d/ros-latest.list:1
W: Target CNF (main/cnf/Commands-all) is configured multiple times in /etc/apt/sources.list.d/ros-focal.list:1 and /etc/apt/sources.list.d/ros-latest.list:1
E: Unmet dependencies. Try 'apt --fix-broken install' with no packages (or specify a solution).

apt --fix-broken install didn't hepl, now I cannot do anything with ros, I'm stuck. Please, hepl, how can I fix this or delete the whole ros and start from the beginning, because I've made I lot of mess by trying to fix this.