Well, the devuan.sources as shown in post #1 does only contain amd64 as architecture. There is no i386. While non-free is in there.

This is what I get on my system, Excalibur with Cinnamon DE, openssh-server is installed. Can be run in a user console. root permisson not required. It lists the installed packages that contain the string ssh.

$ apt list -i *ssh*
libssh-4/stable,now 0.11.2-1+deb13u1 amd64  [Installiert,automatisch]
libssh2-1t64/stable,stable-security,now 1.11.1-1+deb13u1 amd64  [Installiert,automatisch]
openssh-client/stable,now 1:10.0p1-7+deb13u4 amd64  [Installiert,automatisch]
openssh-server/stable,now 1:10.0p1-7+deb13u4 amd64  [installiert]
openssh-sftp-server/stable,now 1:10.0p1-7+deb13u4 amd64  [Installiert,automatisch]

Well I would think about a ssh package first of all.

apt list -i *ssh*

Alternatively, download a suitable version from the repo, all files required, and install it with apt/apt-get or dpkg -i, doesn't matter. Then pin it.

Update: Just had a look at the Devuan Package View page. In Daedalus there are two packages in the repo, both 7.4.7-1 plus a Debian patch. These are 7.4.7-1+deb12u13 and 7.4.7-1+deb12u14. I guess the later caused a problem. I know apt allows to specify a version, so you should be able to get back to deb12u13. But I have only used it once, long time ago. I can't for sure tell you how exactly that would work today.

Well, pinning isn't required. You can disable search for updates in the options. 7.6.7.2 is the latest version before they switched their naming scheme. I had it on Daedalus, and I am using it on Excalibur now. And I am happy with what I have got, I use Writer and Calc, the rest is installed but not used. This way I have a constant UI. You may play around a bit with the symbol sets supplied to find a suitable one for you.

You download three packages from their website (main, help and language pack) and extract the contents to /tmp.
When you do an update of the main version, like in this case from 7.4 to 7.6, you need to remove the old stuff first of all. Settings remain in place.

# apt remove libreoffice*

Installation:

# cd /tmp/Libreoffice_xyz_Linux_x86-64_deb/DEBS
# dpkg -i *.deb
# cd /tmp/Libreoffice_xyz_Linux_x86-64_deb_languagepack_nn/DEBS
# dpkg -i *.deb
# cd /tmp/Libreoffice_xyz_Linux_x86-64_deb_helppack_nn/DEBS
# dpkg -i *.deb

When LO 7.4 came out there were some voices that said it was not the best. I have downloaded the latest 7.6 version and that works fine. I am not using the LO version from the repo.

You are right, the xlibre stuff is sort of off-topic here. Please can you move that to e.g. https://dev1galaxy.org/viewtopic.php?id=7388?

Thats exactly what does not work for me.

Would be nice if you could post these console outputs in code tags, refer to the button labelled code in rectangular brackets above the editor window. Its better readable.

What I see is a discrepancy between the System Info and the real kernel version. I see you are on Excalibur, and you use xlibre instead of xorg.
dmesg says: "Optional firmware "amdgpu/raven_ip_discovery.bin" was not found" which I would read as not required but stops with error. In any case its not part of the amdgpu firmware package which I also have installed.

Also looked at the latest firmware package on kernel.org, there it is included. So it was added sometime between the Excalibur version and June this year. What you may try is to install the firmware-amd-graphics from backports, if there is any.

I can't recall any network failure during installations that was not due to operator error, i.e. mistyping IP numbers or similar. Anyhow, two nics is an unusual setup and maybe this has led to problems? I have only dealt with one nic on many installations.

AFAIK there is no way to skip modules for known nics, unlike this topic that you may only get ext2 and no ext3/4 when jumping over the "load extra modules" in expert mode.

sysvinit just does its job. I have been using OpenRC when I started with Devuan on ASCII. I have moved back to sysvinit nowadays on new installations since I did not see any advantages as a user from using OpenRC.