G Tech

Method 1 :- Pc

Install TamperMonkey From Extension Store According To Your Browser

Download From There https://www.tampermonkey.net/ 33

Go to This Website https://greasyfork.org/en/scripts/403907-youtube-premium-beta
Click On Install script
When Redirect Just click On Install
Then Close The tab
Open Youtube And Play A Video Yours add Will Not come Like Premium

Method 2 :- Mobile

In This You Have to Install Youtube Vanced Manager
From There https://youtubevanced.com/ 
Scroll Down And download Vanced manager
If Your mobile is Of Older Version Just Selection According to Device
After Downloading Install It And Enjoy

Note: The Youtube Vanced Manegar Were Automatic Update It So Do Not Worry