Youtube is usually pretty good in recommending me leftist content, but every now and then some bullshit like you're describing shows up to me too, sometimes all the recommended to the side of a given video is full of right wing bullshit. I have the impression social media in general is going to shit. Twitter is full of fascists, Instagram (and Tik Tok to some extend) have some of the most vitriolic comments you'll see, and are probably being infested with fascists too.