Help !!!!

Okay so I’m sooo sorry if this is TMI for anyone but I live with my dad so I really can’t ask him this but how do you all shave down there without getting really bad razor burn. I normally shave down there using shaving cream and my razor but I’m getting really really bad razor burn to the point when it rubs against my underwear it hurts soo bad.

Can anyone help me out with any tips etc

Thank you 💕