Are the myths true? Can you really tell what you're having by morning sickness and cravings?

Mimi • Momma bear 🐻 expecting her second cub💙.
I've been TTC for a year now and I hear women say " morning sickness is a sign of a girl ". I also heard boys give you heartburn. What foods did you crave though with a girl? What foods did you crave with a boy? I was told sweets and spicy mean it's a boy and fresh fruits veggies and pasta mean it's a girl. Not sure how true it is! I also heard if your constipated that means a boy also. I know what a few of my friends told me but then again it could be similarities since they were all pregnant but with my first born I craved spicy food and lemonade and I never had heartburn and I had a little boy? What were your cravings when you were pregnant?