I don't watch baby content. Somebody at home does, so youtube offers me that. No, we don't share accounts. No, we don't share devices. Sometimes youtube offers me Chinese and Indian content, and ads.

I seems your feed is more consistent than mine.

It adds some amount of "proxy content". But right-click or long-click and block the channel on the stuff you really don't want. Also if you watch a video you thought was interesting but it was lame, go to history and remove it.

And finally if you regularly watch stuff subscribe, it's a strong preference indicator.

I do get some junk in my feed now and then, but mostly I discover good stuff I enjoy. And that includes really small channels.