Beautiful Leg System: Counterattack from Ordinary to Extraordinary

The writing is too immature and childish. The younger one comes after the older one. The gourd boy saves the grandfather. The villain also seems to be a little weird. You can either go directly or find another one to give the protagonist time to develop. It is better to go straight to the back of the villain. It will show that the villain in front is working in vain and there is still the halo of the protagonist. It was suddenly strengthened out of nowhere, with no foreshadowing at all, and the person who came to help the protagonist didn't help at all, and the one who didn't help was just soy sauce, right? Even the protagonist might as well help, and the protagonist has just started, and his attributes are better than those of a veteran. How is it reasonable?