Why my SD card on cell phone keeps corrupting ?

I've got an annoying problem with cell phones, not only one but on different phones with different SD cards. The photos keep corrupting whenever I transfer them between internal storage or PC via card reader, mostly part of the photo can't be displayed. I've not done that with more than a few photos with USB coz it's too slow, was it the no. of photos matter ? but when I do backup it's always large no. of files to handle, or was Linux handling FAT32 not reliable ? the 256G card was formatted on the phone, or was it JPG has no error correction ? That's the reason why I don't want to use SD card on SBC like the Pi as system drive, USB flash is the better choice if not emmc or m.2