Ok I see. 

Still in the LND node app that Umbrel provides , we can easily backup our seed words and the .scb file for the channel. 

It would be perfect to have the same UX experience for the Albyhub with Phoenixd app, even if I understand that it's not possible for some technical reason.

In the case of Phoenixd I guess the seed words would be enough as it is all we need to recover a Phoenix Wallet.

My quest now is to be able to find my private key for my Phoenixd node, and back it up. But it's a shame that  for such a great app designed for non technical people, to have to go through this process IMO