shaving?

EVERY SINGLE TIME I shave I get razor bumps and it burns and omg can someone help me. I do it like 1 time every week. I get in the bath for like 10 min, I apply a coconut scrub wash it off use body wash and then lather up some shaving cream and use the like most expensive freaking razor lol like what am I doing wrong. Then I apply some stuff that is supposed to prevent razor bumps for the next few days but they still come!!! Ughhhh