Lol people don't realise how difficult it is. Your average Joe can't just join up. Playing a video game and actually having what it takes to be special forces is something entirely different altogether.
Typically only 10% of candidates make it through the initial selection process. From a group of approximately 200 candidates, most will drop out within the first few days, and fewer than 30 will remain by the end. Those who complete all phases of selection are transferred to an operational squadron.
Just stick to games