I run Debian 12 and ran into similar issues trying to automount NFS, even down to having to use an alternative console to log in and undo f stab edits
My solution was simple and so hopefully it helps you as well. In fstab, the backslashes don’t cancel out spaces. Since my directory path had a space in it, that would break fstab:
Path/to/your/Video\ Files
breaks fstab
Path/to/your/VideoFiles
good
One suggestion is to look at getting any useful docker container up and running first to get a feel for it, then pivot towards heavier lifts. Self-hosting emails is going to be a headache as others have said, and monero nodes sounds like it could be a technical as well but that’s admittedly an uneducated guess.
You can look at the recent selfh.st poll for the most popular docker containers, see if any strike your interest and start there.