I am only semi tech-savvy, but I can tell you need that you need to raise your budget. Even gaming laptops running AMD hardware tend to cost around $600-800.
Most laptops at your price point come with power-saving ULV processors, integrated graphics, and maybe 4GB of RAM. They're only designed for normal tasks, such as web surfing, typing, etc. With those specs, there would be a lot of lag, glitches, freezing, etc.
For gaming you need processor that can reach around 3Ghz, at least 8gb of RAM, and a dedicated graphics card.