Conception myths/facts

Hi mummies! Is it true that you need to follow a specific time, diet, days, position etc to conceive your gender of choice? Like if you did this and that you'll get a boy, if you did the other way round you'll get a girl? How accurate is the myths? Oh and dont forget the chinese gender calender! Some said its accurate! Had a boy previously, now wanted a girl. Any conception tips that mummies can share? 🤭 PS- Please dont judge me, I know gender is base by husband's chromosomes and whatever God wants to give, but its not wrong to try and make an effort, right? ❤️