Why did the neolithic people use tools and weapons made out of bronze

Metals can be worked in ways that stone can’t. Metal is malleable whereas stone is brittle, and can only be chipped into shape. Bronze is stronger than copper, and all the constituent metals used to make bronze can be smelted out of their ore at relatively low temperature, in comparison to iron which requires higher temperatures, and is therefore harder for primitive people to obtain (not counting the occasional lucky find of meteoric iron).