Sad news (writing from functioning new User)
With Migration Assistant in a functioning User (admin) I backed up from Time Machine (pre malfunction) the file “Macintosh HD” was successful.
No documents found in functioning User. I could not login into faulty User (password rejected). During backup I had used the same old login passwords (wrong?).
Then I attempted backup of the second file ”SSD Data”. This time I created new passwords. Backing up got stuck and would not complete.
Rebooted with recovery and reinstalled OS with update 10.15.8
I’m at a loss what to do (retry?)
Apple Store (2 red notifications) does not open (System Configuration).
Advice please how to recover my lifetime files.