What the app script code below does:

1. function DriveLinkFetcher lists file details ("File url", "File name", "Viewers email", "Viewers names", "Editors email address", "Editors names", "Sharing Permission", "Sharing Access", "New file name", "Add new editors") of a google drive folder, given the url of the drive folder in cell "A2". The output is a list in a google sheet.

2. function RenameDriveFiles renames "file names" in the folder to "new file names" depending on user input in the "New file name" column.

The problem:

function RenameDriveFiles works well for the files with no duplicate names. But if a file name has duplicates (for example, three "file 1", pls see the image) and I want to rename only the second file (rename to "file 100"), sometimes it renames all three files, sometimes two files.

The "File name" column contains duplicates and "File url" has unique IDs. So instead of using fldr.getFilesByName(oldNames[i]), is there a way to use fldr.getFilesByURL(URL[i])? Can you suggest any solution?

The output sheet is like this:

The app script code:

    var ss=SpreadsheetApp.getActiveSpreadsheet();
    var sh=ss.getActiveSheet();


        function DriveLinkFetcher() {
          
.....
.....
        }
    
    
    function RenameDriveFiles() {
    
      var url=sh.getRange("A2").getValue(); //url input from user
      var fldrID=url.match(/[-\w]{25,}/);
      var fldr=DriveApp.getFolderById(fldrID);
      
      //var files=fldr.getFiles();
      
      var lr=sh.getLastRow()-6;
      var oldNames = [];
      var newNames = [];
    
      oldNames = sh.getRange(7, 2, lr).getValues();
      newNames = sh.getRange(7, 9, lr).getValues();
    
      
        for(var i = 0; i < oldNames.length ; i++){
    
          var myFileIterator = fldr.getFilesByName(oldNames[i]);
    
          while(myFileIterator.hasNext()){
            var currentFile = myFileIterator.next();
            currentFile.setName(newNames[i]);  
    
        }
      } 
    }
    
    
    

I know some VBA but this is my first attempt in app script. I am learning. Any help, any tip how to make this code better will be much appreciated. Thank you in advance.