I recently discovered a method which allows you to watch YouTube videos ad free without inserting any extensions or ad blockers. You can follow the below mentioned steps which will help you to block all the YouTube advertisements permanently. Please note that this method is applicable only while viewing YouTube videos on desktop / laptops. It does not work on mobile phones
1. Download the Brave Web browser
2. Open the app and search for YouTube in the search menu.
3. Once the YouTube page opens click on the three parallel lines on the top right corner (as indicated in the below screenshot). This will open up the drop down list.
4. From the dropdown list select More Tools => Create Shortcut (please refer the below screenshot)
5. After selecting Create shortcut, it will open up a dialog box. Select Open as window check box. Then click on Create (please refer the below screenshot)
6. The above step will create the following YouTube Shortcut on the desktop
7. Now click on the shortcut and it will open the following YouTube window in full screen
You can now play any YouTube videos without even a single advertisement.