As others have noted, and as many people feared after your first crash, you are not competent enough at this point to handle a motorcycle, certainly not a liter bike, and maybe not even a 600cc machine. You need training time to learn the raw skills and you really need to understand why you can't control the impulse to twist the throttle. If you don't have the self control, and many people don't, please stay off a road motorcycle for you will end up badly injuring yourself, or worse. Your first two crashes were on desolate roads, once you are in the presence of cars the whole dynamic gets ramped up. These are not toys even though they are sold that way. Get some serious training and reevaluate if you are motorcycle rider material. Not everyone is.