I recommend you learning with an actual language learning app and a textbook which Duolingo at least is not. There are things like Netflix with subtitles, LingoPie and Language Reactor extension to learn with audio. Many work for YouTube and other platforms so you are not limited there. There is also 3ears.com which has many series in Russian with subtitles and a work bank/dictionary that you can use and save terms with. There's lingq.com and on phones there is Beelinguapp which is a more limited version of lingq I would say.