Youtube is pretty much unusable now, more than half the videos are low effort Ai slop, and the rest is just irrelevant, leaving the real content buried deep down in the algorithm.
Edit: I forgot to mention that I don't use an YouTube account and haven't used for years for privacy reasons. I'm mostly speaking about using the search function without an account.
Avc (h264) 8bits video, with AAC audio, hardcoded subtitles and .mp4 container.
That should be warrantied to work on every dumb device built this or last decade.
I used to upvote anything I agree with or that is somewhat midly interesting, but then I realised that if I do that, then the truly good content gets drowned in a sea of upvotes.
(For example let's say I upvote a comment in a thread that I think it's really good and exceptional, but then I also upvote other comments that ya I kinda support even tho it's nothing exceptional. Then I'm drowning the exceptionally good comment.)
Because of that I now tend to limit my upvotes so when I actually vote they weight more.
As for downvotes I personally think they are rude, and usually try to only downvote when something is factually wrong or downright reactionary.
Instead I prefer to upvote comments disagreeing instead.
Sometimes I tend to upvote a comment when I think it was down voted unfairly.
And also down vote commercial posts of commercial products that I see as nothing but advertisement.
Very anonymous, it routes all traffic though the tor network and blocks all direct connections except for the unsafe browser.
Of course tor cannot protect you from bad opsec, the user installing malware on it or a powerful enough opponent that can analyse both entry and exit nodes (or just owns 0 day exploits). But for most common people it's pretty damn anonymous I would say.