This is why I use a PC (Linux) hooked up to my TV and not the TV. There is too little control in TV OS’s and there are many ways around that. Not using it is the easiest solution.
There is a plugin called unhook that I find useful for this purpose. You can hide suggested, chat, comments, home feed, etc to really hone in on what you want to watch. Each option has a toggle so for days that you feel the need to just loaf you can still do so. I also uninstalled YouTube from my mobile devices so I am forced to use the browser which adds additional friction. I still watch a lot of YouTube, but I am much more intentional now.
I also switched from and Apple Watch to a Casio. Mine is a simpler one that only does the step tracking, but that was all I really wanted. I still have phantom vibrations a year later. Crazy.