Correct pronunciation of「ひ」


I used to pronounce it as **"Hi"** but recently i paid keen attention to
natives speaking words like **「広い」、「低い」** and I find out they pronounce it as
somewhat **"che"** but when i try to say **"che"** what comes out of my mouth
is **「し」("shi")** , so please help me out... I really wanna sound native.

