In most cases, laptops are fully integrated. That means there are not separate cards for video, audio, network, ... It's one of the sacrifices you make for the sake of potability.
If you really are a gamer, you should have a desktop computer, not a laptop. And it should be a customer desktop too! Gaming is high performance computing and laptops are not designed for that purpose. Laptops are for portability.
Buy a customer desktop gaming computer.
Best,
-- Andy