How to temporarily root Samsung A5 (2017) SM-A520F?

Question

Android

good afternoon,
how to get a temporary root on the phone to recover deleted files, but without deleting everything from the phone (all programs and files must remain the same)
on the 4pda article, as I understand it by flashing the phone 4pda.ru/forum/lofiversion/index.php ?t804157-1600.html which entails the complete removal of all applications and data.