Gender prediction

Cee • My name is Cee'mone I am 26 and a Mother to a Beautiful 6 year old ex 25 weeker Skyla 💜💖and a Handsome little man Whom I call Kylan👶🏾👣
My baby's heartbeat always ranges from 152-158 what does heart rate suggest I want a girl so bad did anybody just know what they were having what's the difference f on being pregnant with a girl than boy ?