I've used Yandex and it seems to be a crazy echo chamber. I searched on it and I got results for a niche subreddit that I used to visit without using [libreddit](https://github.com/libreddit/libreddit) before I started caring about my privacy. The results don't really have anything to do with what I was searching but I guess the algorithm just puts a lot of points in familiar websites. And I don't know how they've got that data anyways, probably either Google or Reddit sold them the data.
I only wanted to see what the internet was like without big tech and western media. The best way for this would be to have my own [Mwmbl](https://mwmbl.org/) instance once it has user crowdsourcing, but for now I could only think of trying [marginalia](https://search.marginalia.nu) or [Yandex](yandex.com). Yandex doesn't seem to block either big tech or western media anyways, so I didn't found the experiment interesting.