Who I have the same questioned this topic

I recorded a video (60 seconds) & took 7 photos at work (I show my customers my photo info so they can see date/time stamp and location of photo so they know it is not someone else's system) as I have done multiple times daily, then 5 minutes later I am in customers house discussing his issues with his system and pull my phone out of my pocket and the Samsung logo is on the screen as it does when the phone is powered up, then the welcome screen displays and asks for my Samsung account info!

After I put my account info in it takes me to setup, like a brand new phone! Gives me options to set up as a new phone or restore from saved backups....WHAT!?!?!?!

I cannot retrieve the photos or video I have taken since backup but worse than that my 64 gig SD card that I had 5 gigs of photos, documents & apps on is missing and must have been corrupted through this reboot because in app "my files" it shows SD card has 59 Gigs available out of 59 Gigs (not 59 of 64)

Now what???