Mint works well on my Thinkpads

Debian

Look at Mikrotik. Very affordable and extremely powerful. Only do this though if you know what you are doing with networking

All my devices use Syncthing via Tailscale to get my data to my server.

From there, my server backs up nightly to rsync.net via BorgBackup.

I then have Zabbix monitoring my backups to make sure a daily is always uploaded.

Ubuntu 22.04 base with a Plex docker container. ZFS as the file system on my host

Brother works incredibly well. Plug and play

Linux Mint is what I use and have no issues with my 3070.

Chimera OS might be something you can look into however I have not used it

Pop OS is also great for nvidia support

It’s using the Duckduckgo app

More ram 🐏

Open source isn’t just about auditing the source. Sometimes a bug might be found that the developer might not have the time to fix so someone else with the know-how can contribute the changes to fix the bug. Some goes for any features/enhancements that would be nice to be added

Liftoff is another open-source option that is getting a lot of updates and is very stable

Can you send you docker-compose file?