Ok, well at least we definitely have your backup ID, and I assume you have the seed phrase.
It is best now that we do a fresh instance of Umbrel. You can reformat your SSD How to easily reformat an ext4 / Umbrel drive and then use your reflashed SD card to start again.
Once, you have the bitcoin app and lightning up again, you should be able to restore with your seed phrase. This should display recent lightning back-ups, but if it doesn’t let us know and we will send the encrypted file to you.