This is where LLMs have been the most helpful for me. There are many ways to make your homeserver more robust, automatically run backups and updates etc., but setting them up properly takes time. I now use "infrastructure and code", i.e. I have a git repo with Ansible scripts that can reproduce my entire server configuration. Using coding agents I can easily add and configure services, and by having an agent ssh into my server I can summarize logs or debug if there is an issue. The setup is now way more stable and better protected than anything I ever made manually.
I got a six sigma green belt using minitab in ~2018. It's still in use and getting updates, for example they now provide an interface to python: https://pypi.org/project/mtbpy/
The software feels a bit clunky but I was very surprised when I plugged my Fenix watch to USB and found it mounted as a storage device with all of the data directly accessible as files. The watch would be perfectly usable without the cloud and using an alternative app like gadgetbridge. This should be the standard, but it isn't, and it is more important to me than a sleek UI