Could not get lock /var/lib/dpkg/lock-frontend. It is held by process 43788 (apt-get

1. There is neither an "Ubuntu 20" nor "Ubuntu 22", but each year there are two independent Ubuntu releases, e.g. 20.04, 20.10, ..., 22.04 and 22.10. I assume that you intend to do a release-upgrade from 20.04 to 22.04

2. The package management system makes sure that at a certain moment only one process can update software packages (imagine that in one window you install package A that depends on already-installed package B, but in a second window you uninstall package B at the same time - what do you expect that the package management system should do?)

Apparently there is one apt-get process already running, and thus you have to wait for it to finish, before you can start another "apt-get dist-upgrade".

You need administrator rights. Run with "sudo apt-get dist-upgrade"

root@cxo-ibd-kafka-test-producer:~# sudo apt-get dist-upgrade
E: Could not get lock /var/lib/dpkg/lock-frontend. It is held by process 43788 (apt-get)
N: Be aware that removing the lock file is not a solution and may break your system.
E: Unable to acquire the dpkg frontend lock (/var/lib/dpkg/lock-frontend), is another process using it?
root@cxo-ibd-kafka-test-producer:~#

What is the output of the command

ps ax --pid 43788

  43788 ? S 0:38 apt-get dist-upgrade

Some user has started the "apt-get dist-upgrade" command and it is still not complete.
It seems that that process is somewhat stalled.
You might try ending the process, either by killing it or by a complete reboot.