I don’t use the main YouTube website at all anymore. A big reason for this is that I spend a lot of time using a really weak laptop that tends to struggle with the JavaScript-laden abomination that is modern corporate web design. Firefox itself struggles as well, so I primarily use Luakit with Invidious, which runs peachy. I also put together a local html page for my bookmarks that is generated from Yaml using a small C application (which is not optimal, I know, but I’ve been learning C and this was a good opportunity). Whenever something doesn’t work in Luakit, I evade to Palemoon. I also tried watching YouTube via mpv earlier, and it’s great! It runs infinitely better than any web player at max resolution and buffers the whole video. Never going back.
I’ve started to just download videos with yt-dlp after grabbing links via Invidious. Using Invidious itself has become somewhat unreliable lately, and this way I don’t have to put up with buffering and can watch in good quality. Cut out the middle men