If you like metal music, I heard about these sites ... from a friend: https://losslessmetal.com/ https://metalminos.net/

No idea who runs these. Some of the FLAC rip logs are in Russian ... or so I've heard. I'd obviously never go there myself!

The fast and simple way - pick a decent non-corporate search engine, type the name of the media you want in quotes, and add "скачать", "смотреть" or "читать", which is Russian for "download", "watch", and "read", respectively. You'll get useful results, usually on the first page. Works from any location in the world. Just be ready to dodge a bunch of pop-ups, and make sure the media isn't translated in Russian, games in particular.

One time in Minecraft I got a ton of music from Rutracker.org.

99% of the time there were flac or mp3 options. They even had obscure stuff I wouldn't expect to find there. There wasn't anything I loooked for they didn't have. You need to make an account to download and it's in Russian but just use a page translator.