Siri shortcut to enter or exit Full-screen video

I saw that you guys have integrated siri shortcuts in the brave settings and I would really like you to add another. The shortcut would enter/exit Full-screen for the video playing on the current tab. I want to use this for YouTube, but it would ideally work on any site of course. The reason I want this is that I have dexterity issues that cause trouble with the swipe gesture to get the video into fullscreen, and the button on the player is quite small. I wouldnt actually talk to siri to activate it, I want to bind the shortcut to my action button! I tried to manually do this myself with a custom Javascript shortcut, but for the life of me I couldn’t get it to work. Thank you for all the work you guys do, it makes the web so much more usable for me!