How to create a pdf file from a google doc that has been saved and stored in a google drive folder

Can someone help me with the code that I need to convert and save a google doc into a pdf file. THe script is this:
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var plantillaId = '12233336566666';
var destinationFolderId = '4545656454566';
var temporalFolderID = '456456151566151';

function onFormSubmit() {
  var hoja = SpreadsheetApp.getActiveSpreadsheet().getSheetByName("Form1");
  var lastRow = hoja.getLastRow();
  var accionFormativaRespuesta = hoja.getRange(lastRow,3).getValue();
  var accionesFormativas = accionFormativaRespuesta.split(', ');

  accionesFormativas.forEach(function (accionFormativa) {
    var destinationFolder = DriveApp.getFolderById(destinationFolderId);
    var temporalFolder = DriveApp.getFolderById(temporalFolderID);
    var archivoPlantilla = DriveApp.getFileById(plantillaId);
    var copiaArchivoPlantilla = archivoPlantilla.makeCopy(temporalFolder);
    var copiaID = copiaArchivoPlantilla.getId();
    var doc = DocumentApp.openById(copiaID);
    doc.setName(nombre + ' ' + primerApellido + ' ' + segundoApellido + ' ' + accionFormativa);
    const document = doc.getBody();
    var text = document.editAsText();
    var startIndex = text.getText().indexOf('{{Acc}}');
    if (startIndex !== -1) {
      var endIndex = startIndex + '{{Acc}}'.length;
      text.replaceText('{{Acc}}', accionFormativa);
      text.setBold(startIndex, startIndex + accionFormativa.length - 1, true);
    };
    // * HERE IT WOULD BE CONTAINED THE CODE THAT HANDLES THE PDF CONVERSION * //  
  })
}

I have left out much of the not needed code that gets the data from the google sheet and saves into the google doc files for the sake of simplicity. I pretend to create a pdf file for each google doc created through each iteration of “accionesFormativas”. I have tried many different ways but javaScript makes it very difficult to make pdf conversions. Can someone help me out?

I have tried several ways. Lastly with this code:

    var copiedDoc = DocumentApp.openById(copiaID);
    var copiedBody = copiedDoc.getBody();

    var newDoc = DocumentApp.create('Temp Document');
    var newBody = newDoc.getBody();

    copiedBody.getParagraphs().forEach(function (paragraph) {
      newBody.appendParagraph(paragraph.copy());
    });

    var pdfFileName = nombre + ' ' + primerApellido + ' ' + segundoApellido + ' ' + accionFormativa;
    var pdfBlob = DriveApp.createFile(newDoc.getAs(MimeType.PDF));

    destinationFolder.createFile(pdfBlob).setName(pdfFileName + ".pdf");

    DriveApp.getFileById(newDoc.getId()).setTrashed(true);
    copiedDoc.setTrashed(true);

But nothing seems to work right