I’m a good chemist, but not IT advanced. Started using Debian out of the box last year on miniPC. Running Jellyfin only on that local machine. Don’t understand coding, but copy/ paste terminal instructions from trusted sites. Have 1TB music, films and documents. Want to move all photos from Google.
But for gods sake use proper backups. The tendency for immich to break things is the reason I nowadays recommend photoprism to people who start with selfhosting - it’s worse in a lot of ways but way more stable most of the times.