If you have backed up the files then you do not have to worry about accidentally deleting the files. If the files are deleted accidently then you can recover the files from the backup created earlier.
However, if the files are deleted and backup was not created then it will become a big problem for the user. Data can be deleted due to any reasons; it can be deleted due to infections, system failure, or corrupted hardware. If you have not created a backup of the files and the files are deleted then don’t worry you can use recovery tools to recover the deleted data.