You should try lemmy, it’s almost everything what you describe you are missing. Jokes aside, I think that what you refer is mainstream internet, which like music is usually shitty if it’s mainstream, to find the good stuff you have to take your time to dig deeper. Internet is an incredible tool and it’s being used both to enslave and to free people.
Amazing. I feel exactly the same about modern documentaries and I expressed the same dislikes about them just a few weeks ago. Have you checked out DW Documentary Youtube channel? In case you haven’t it has good documentaries and sometimes exceptionally good, very informative and eye opening, all without fancy effects, just the raw subject matter. These two are recent ones that I really liked:
China and the Uyghurs
Climate Change - A verting catastrophe
another channel that I like is Veritasium, it’s about science and not really documentaries but worth to check out due to its quality.