I still remember years ago one time windows fucked itself and god knows why I couldn’t fix it even with USB recovery or stuff like that (long time ago, I don’t remember).
Since I couldn’t boot into recovery mode the easiest way to backup my stuff to a connected external drive was “open notepad from the command line -> use the GUI send to… command to send the files to the external drive -> wait and profit” lol.
Same process here, started with yunojost and now using docker directly. Still Yunohost got me into self-hosting when I didn’t know anything about it, definitely recommended for starting out.