Terrible On Top!💔

So I don't know if it's just me, but I'm just not good at being on top during sex. I literally dread when my boyfriend asks me to go on top. It's not because I'm lazy and don't wanna do any of the work either it's simply because I can't get the motion, the rhythm, or the speed down! I genuinely feel like neither of us enjoy it and I really want that to change! I feel so bad and could seriously use some advice from you ladies who are pros on top!