There is a great, free (not fake free, but really free) bulk file re-namer utility that everyone should know about. You can re-name hundreds of files in seconds which is good if
Advanced Renamer - Free and fast batch rename utility for files and folders
Save Time: How to Rename Multiple Files at Once in Windows | PCMag
Save Time: How to Rename Multiple Files at Once in Windows | PCMag
GitHub - whyboris/Simplest-File-Renamer: Simplest file renamer - rename your files quickly and easily