Greetings

Postgresql has an apt repository.
Except its only related to either Debian or Ubuntu.

So If I include

deb http://apt.postgresql.org/pub/repos/apt/ bookworm-pgdg main

in /etc/apt/sources.list

I get on an #apt update

E: The repository 'http://apt.postgresql.org/pub/repos/apt daedalus-pgdg
Release' does not have a Release file.

So - - - - what do I do for a Debian to Devuan workaround?

For x2go - - it seems to be a different kind of problem.
Following is the error message.

W: An error occurred during the signature verification. The repository is
not updated and the previous index files will be used. GPG error:
http://packages.x2go.org/debian bullseye InRelease: The following
signatures couldn't be verified because the public key is not available:
NO_PUBKEY E1F958385BFE2B6E

Sadly x2gos docs are rather outdated and I can't find a way to update what
I have to what is needed.

Is there some apt guru who would be able to advise?

TIA