

So you need to understand a bit more about addresses here. If you access the website from the pi it will be http://localhost:5232/ as the address using the defaults. Form another machine it will be http://ipofpi:5232/
As said below you need to make a file to specify that address, but the defaults given will end up with the above ip addresses. It is a http, not a https as well. So config the address used via the documentation and then access it how you’d like to. This is used because you can, if you wish, specify a different port (5232 is the default)
I hope that helps
I haven’t changed much in years, still run a truenas box (was freenas before) with 5 spinning rust drives and never lost any data yet (bang goes something now I’ve said it). Currently duplicati but some stuff is just backed up manually still. Each to their own like, and immich on truenas for backing up photos and videos