Bulk File Change from CSV in MacOS
Go to Finder and go to the directory with the file names you want to change, then select the files you want to change the name of. Then go to the gear icon in the top of the Finder window, or just right-click on the files you selected. There is a command to change x-number of file names. See the first image below.



When you click on the rename x items you get the following pane.



From here you can set up the new file names.