Add another row content to the .txt - google-apps-script

Question

I just got to work the script to export the content of a row to a .txt and put a =, but now i would like to know how i can add the content of other row to the .txt like i will show on the screenshot.
This is the code that i currently have but i dont properly make to work.
function exporttotxt() {
var ss = SpreadsheetApp.getActive();
var sheet = ss.getActiveSheet();
var range = sheet.getRange('G3:G' + sheet.getLastRow());
var rows = range.getValues().filter(([g]) => g.toString() != "");
var range2 = sheet.getRange('I3:I' + sheet.getLastRow());
var rows2 = range2.getValues().filter(([i]) => i.toString() != "");
var fileName="exported.txt";
var folderName="Videos";
var data = rows.splice(0);
var data2 = rows2.splice(0);
var str = data.map(function(e) {return e.join()}).join("=") + "=" + data2.map(function(e) {return e.join()}).join("\n");
var content = str;
// get list of folders with matching name
var folderList = DriveApp.getFoldersByName(folderName);
if (folderList.hasNext()) {
// found matching folder
var folder = folderList.next();
// search for files with matching name
var fileList = folder.getFilesByName(fileName);
if (fileList.hasNext()) {
// found matching file - append text
var file = fileList.next();
var combinedContent = content;
file.setContent(combinedContent);
}
else {
// file not found - create new
folder.createFile(fileName, content);
}
}
}

Answer 1

I believe your goal as follows.
You want to create a text by merging the values of colums "G" and "I".
In your situation, how about retrieving the values from the columns "G" and "I" by one getValues? By this, the process cost will be lower and the script becomes a bit simple. When this is reflected to your script, it becomes as follows.
From:
var range = sheet.getRange('G3:G' + sheet.getLastRow());
var rows = range.getValues().filter(([g]) => g.toString() != "");
var range2 = sheet.getRange('I3:I' + sheet.getLastRow());
var rows2 = range2.getValues().filter(([i]) => i.toString() != "");
var fileName="exported.txt";
var folderName="Videos";
var data = rows.splice(0);
var data2 = rows2.splice(0);
var str = data.map(function(e) {return e.join()}).join("=") + "=" + data2.map(function(e) {return e.join()}).join("\n");
var content = str;
To:
var range = sheet.getRange('G3:I' + sheet.getLastRow());
var rows = range.getValues().filter(([g, _, i]) => g.toString() != "" && i.toString() != "");
var fileName="exported.txt";
var folderName="Videos";
var data = rows.splice(0);
var str = data.map(([g, _, i]) => `${g}=${i}`).join("\n");
var content = str;