I have made this bookmark: https://www.youtube.com/results?search_query=bitcoin&sp=CAI%253D
It searches YouTube for videos containing the keyword "bitcoin", sorted by age with the newest on top.
However, there's always a bunch of non-English ones polluting the search result. Since I can't understand them, they are useless to me. Since I load this bookmark many times a day, it does add up to a lot of wasted time and energy.
I'm trying to exclude any non-English search results.
Oddly, the "Filter" drop-down setting thing has no option for language.
It should be noted that I have spent countless hours in the past trying to scrape YouTube search results and filter videos out and notify me about them in an automated manner. They keep changing the code around and have gone to insane lengths to obscurify their data and mess with robots, so this always breaks even if I do get it working temporarily. That's why I have this bookmark and am forced to manually load it.
They do have hidden RSS feeds, but only for channels. Not for search results.
I have over the years found various YouTube-related programming projects, but they all seem to give up/die quickly, or try to make me register accounts and pay them money for any useful information.
What can I do?