uploading 2 seperate file inputs with app script

my code is able to uplolad to the google sheet but not the files anyone assist wth modification to upload files and shhet update same time

 <form method="post" name="google-sheet">
              <div class="form first">
                  <div class="details personal">
                      <span class="title">Personal Details</span>
  
                      <div class="fields">
                          <div class="input-field">
                              <label for="fname">First Name</label>
                              <input name="First-Name" type="text" placeholder="Enter your first name" required>
                          </div>
  
                          <div class="input-field">
                              <label for="fname">Last Name</label>
                              <input name="Last-Name" type="text" placeholder="Enter your last name" required>
                          </div>
  
                          <div class="input-field">
                              <label for="fname">Email</label>
                              <input name="Email" type="email" placeholder="Enter your email" required>
                          </div>
  
                          <div class="input-field">
                              <label for="fname">Mobile Number</label>
                              <input name="Number" type="tel" placeholder="Enter mobile number" required>
                          </div>
  
                          <div class="input-field">
                              <label for="fname">Gender</label>
                              <select name="Gender" required>
                                  <option disabled selected>Select gender</option>
                                  <option>Male</option>
                                  <option>Female</option>
                                  
                              </select>
                          </div>
                          <div class="input-field">
                              <label for="fname">Marital Status</label>
                              <select name="Marital-Status" required>
                                  <option disabled selected>Select Status</option>
                                  <option>Single</option>
                                  <option>Married</option>
                              </select>
                          </div>

                         
                  <div class="details ID">
                      <span class="title"></span>
                      <span class="title">Applicacants Documents</span>
                      <div class="fields">
                       
                          <div class="input-field">
                              <label for="fname">NRC</label>
                              <input type="file" name="myFile1" placeholder="Enter your email" required style="border: none; background-color: cadetblue;">
                          </div>
                          
                      </div>
                      <div class="fields">
                          
                          <div class="input-field">
                              <label for="fname">Bank Statement/Recent Payslip</label>
                              <input type="file" name="myFile2" placeholder="Enter your email" required style="border: none; background-color: cadetblue;">
                          </div>
                          
                      </div>
                         <form/>



this is my html script form handler 

const scriptURL = ‘https://script.google.com/macros/s/AKfycbxs5e-6vCqoK-LhTJNaLq2pjo5BQnFl3bS1N9xnXZzryE2s7aGQS2kGPfryR8V9iucAwQ/exec’
const form = document.forms[‘google-sheet’]

form.addEventListener(‘submit’, e => {
e.preventDefault()
fetch(scriptURL, { method: ‘POST’, body: new FormData(form) })
.then(response => alert(“Thanks for Your Application..! We Will Contact You Soon…”))
.catch(error => alert(‘Error! in Submitting Details, Please try Again’, error.message))
form.reset()
})

and the google site script

var sheetName = ‘Sheet1’
var scriptProp = PropertiesService.getScriptProperties()

    function intialSetup () {
      var activeSpreadsheet = SpreadsheetApp.getActiveSpreadsheet()
      scriptProp.setProperty('key', activeSpreadsheet.getId())
    }

    function doPost (e) {
      var lock = LockService.getScriptLock()
      lock.tryLock(10000)

      try {
        var doc = SpreadsheetApp.openById(scriptProp.getProperty('key'))
        var sheet = doc.getSheetByName(sheetName)

        var headers = sheet.getRange(1, 1, 1, sheet.getLastColumn()).getValues()[0]
        var nextRow = sheet.getLastRow() + 1

        var newRow = headers.map(function(header) {
          return header === 'Date' ? new Date() : e.parameter[header]
        })

        sheet.getRange(nextRow, 1, 1, newRow.length).setValues([newRow])

        return ContentService
          .createTextOutput(JSON.stringify({ 'result': 'success', 'row': nextRow }))
          .setMimeType(ContentService.MimeType.JSON)
      }

      catch (e) {
        return ContentService
          .createTextOutput(JSON.stringify({ 'result': 'error', 'error': e }))
          .setMimeType(ContentService.MimeType.JSON)
      }

      finally {
        lock.releaseLock()
      }
    }