>>33115383I am speaking 2D exclusively here. For girls it's usually a combination of personality and appearance that is the deciding factor. Even if the man looks very hot, if he is boring, he's not gonna win more than a few who are particularly into that type.
However even if a man is ugly, if his personality is good enough, he can still gain fans who will prettify him afterwards to make him more palpable. See; Magni.
Try to remember what anime boys are consistently popular, it's usually guys with a confident attitude, whether they be relaxed, arrogant, angry, or what else, most popular characters are either very strong or have very strong personalities.
Some examples I can think of, of men who are very popular among women in the animu-sphere; Levi/Erwin (AOT), Gojo Satoru/Nanami Kento/Sukuna (JK), Uzui Tengen/Rengoku Kyojuro (KnY), Kakashi/Itachi (Naruto), Law/Ace/Zoro (OP), Howl (Howl's Moving Castle), Sebastian (Black Butler), Roy Mustang (FMA), Jojos and their Jobros (JJBA).
If you want more examples, head over to /cm/ and see what kinda characters and art get posted there. Be wary that most female consumers are not openly into shota and there's a bigger backlash for women who are into it outside of 4chan.
Posting another husbando of mine as an example.