It is inevitable that data loss on Samsung by mistake. However, you still have a chance to
get back lost files from samsung phone [android-recovery-transfer.com]. But you should try to recover them as soon as possible, because if the deleted data overwritten by new data then you couldn't recover them anymore. I suggest you try Android Data Recovery program to
rescue android files [android-recovery-transfer.com], like photos, video, contacts, messages, documents, and more from Samsung phone or tablet.