Touch Controls for YouTube provides VLC-style gesture-based brightness and volume controls for YouTube when playing videos in full screen mode.
You can increase or decrease the volume by swiping your finger up or down on the right side of the screen. Swiping the finger on the left adjusts the screen brightness.
Go premium to enable:
• Brightness controls
• Tap action
• Double tap action
• Long press action
• Volume control action
• Seek support
• Tap anywhere to cancel autoplay
• Double tap anywhere to confirm autoplay
• Keyboard control
Touch Controls for YouTube runs as an accessibility service, which you need to enable manually under Accessibility settings.