Get video src from ifram using Javascipt

I am trying to get video src from a movie website. The iframe content is in most websites hidden because it's hosted on another server and the only way to get it as of my knowledge is to use the inspect element of the dev tools to inspect the video and then the iframe shows up with the video src. I have tried using Node JS and Puppeteer but couldn't manage to successfully use the dev tools via puppeteer.

Here is an instance of what I have tried so far.

 const puppeteer = require("puppeteer");

async function scrapeMovie() {

 const url = 'https://shahed4u.in/%D9%81%D9%8A%D9%84%D9%85-swords-drawn-2022-%D9%85%D8%AA%D8%B1%D8%AC%D9%85-%D8%A7%D9%88%D9%86-%D9%84%D8%A7%D9%8A%D9%86/watch/';

//start pupeteer browser
const browser = await puppeteer.launch({
    headless: false,
    executablePath: 'C:\\Program Files (x86)\\Google\\Chrome\\Application\\chrome.exe',
    efaultViewport: null,
    // devtools: true, 
});





//open a black page
const page = await browser.newPage();


//open the desire page
await page.goto(url,{ waitUntil: 'networkidle2' },);
await page.waitForTimeout(3000);



    var i = 1;
 while (i <= 10) {
    await page.click('li[data-i="0"]')
    console.log("here yes")
    // await page.select('iframe[frameborder="0"]')'
    // await page.click('iframe')
    await page.waitForTimeout(3000);

    const [el] = await page.$x('//*[@id="vplayer"]/div[2]/div[3]/video');
    const test = await page.evaluate(() => {
            const videoTag = document.querySelectorAll("jw-video.jw-reset video")
            return videoTag.src;
        });
    if(test !== undefined || el !== undefined) {
        
        console.log("here is the results of test: -> ",test);
        console.log("Here is the results of el: ->", el)
        break;
    }

    i++
}








browser.close();

};

**//The result I want is simply video src and then out of it the .mp4 source.** 
**//But The result I now get is undefined as expected.**
 

Another example could be done on this movie site as well; https://www2.solarmovie.to/solar.html

Note: there are adds on those sites mentioned above but its not an issue right now I exit them manually when the automation of Puppeteer does not, for testing purposes, but later on there will be a way around it for sure.

Any help, note or suggestion would be much appreciated and I am sure there are a lot that are in such situations. Thanks