Everything else in this game uses RNG, so why should crafting be any different?

I'm going to be blunt here, but you should stick to 1 and 2 star crafting if you don't like the rng factor in crafting now, there's still lots of gil to be made making that stuff. But for me personally, I like the rng factor in crafting 3 and 4 star, it makes hq actually worth something. Instead of being automatically guaranteed, you actually have to think about your crafts and rotations and do more than mindlessly mashing keys and popping out hqs.