To address the run and gun, riot is aware that this is a problem and are currently working on a fix to make the gunplay more skilled (getting rid of run-and-gun. However in this specific example, this could be an example of ping making is seem like run and gun because you can see that the reyna stops running a split second after she kills you on your screen. About the agents, it requires knowledge of the game to know what each agent’s strengths and weaknesses are. In this sense, it is very similar to league of legends, which is another riot game so it makes sense that they would make something by similar. I would just recommend playin the game more to get some more experience and to learn the nuances of the game. Hope this helps! 🙂