Sometimes, I watch YouTube in Opera because it handles a few things better, and since I don’t have much ad-blocking configured there I see an ad or two.
And tonight I figured out that YouTube thinks I am a woman. I saw ads for: some kind of foundation makeup, shampoo and then mascara. I am not surprised. I mostly watch women and consume media created by women, and not many men do that. But it shows how algorithms go wrong so often.