Will I don't have milk?

I want so desperately to breastfeed and I know that the women that don't have milk are very little. But my mom and my aunt discouraged me.

My Mon had me on 1993 and he had milk only for a few days

My aunt had two kids on 70s and had milk for only 2-3 months

My grand grand mother breastfed her daughter but didn't have for her son.

They say they didn't do something wrong they just didn't have milk. Is this possible? May I have not have milk to nourish my baby?