Ingrown Hairs..?

How do you help to prevent/treat ingrown hairs down there?? I have tried shaving with the hair instead of against it, I am currently using a sugar scrub to exfoliate every time I shower, and I’m still having trouble.

I have 2 or 3 places that have turned from an ingrown hair into like a hard cyst that will not pop or go down. I’m desperate.