How to download Youtube vidoes on mobile or computer

I will share a simple method to download any video from Youtube on mobile or computer. First go to www.youtube.com and click on the video you want to download. Then just add ss after www. or after m. in the URL address bar. Go to the edited address URL and click download. Suppose the URL address of your desired vidoe is www.youtube.com/example , edit the address URL to www.ssyoutube.com/example.