My A21s has now deleted everything on my SD card (mostly photos) TWICE, from two different, purchased new and previously unused, Samsung-branded SD cards. I get a notice (System UI) that an SD card was removed unsafely (it wasn't), and to restart my phone, but by that time (before restarting), the card appears to have been wiped. Removing the card properly and remounting doesn't help, the photos are gone as far as I can see. And now the same notification keeps coming up.
Both were proper Samsung cards purchased new in packaging from a high street mobile phone shop. Thanks but I've already checked the recycle bin in the gallery app, they aren't there.