This is very true! Languages being unintuitive also becomes less of an issue the more languages you look into. There will be many concepts that multiple languages have since ultimately they are all trying to do similar things and the more you learn the more you will recognize making it easier to get into even more languages.
Can you choose 4K from the little gear icon in the bottom right corner of the player?
Not trying to defend YouTube, but I think they align video quality to network speed so you can watch without buffering.