Thank you for tell me, I understand what you are saying, but it is because I created them, I thinked apocalyptic future, that is why they wear clothes with muted colors, broken and big for them. I realy appreciation this tipe of criticism, i'm new in pixel art and they help me ti improve. Thanks !!

Are these childern? They look very mature, perhaps because there is no adult reference? At this scale you might want to add more "childish" features, colorful clothes, different body types, etc..