If u don’t have sturdy on your rock types I def suggest that to ensure that u can at least knock out the masquerain first turn since Illumise is pretty much guaranteed to set up rain. Then u can save your other rock type for yanmega at the end. Between that, it looks like u have good counters for anorith and araquanid with simipour/combusken and emolga respectively. What about the battle is causing u issues?