Can I just... Buy GTA 6 with GTA 6...?

Stupid question ik, and it isn't literal cause I don't even have a PS5, but im interested in asking it cause it could be a good way to learn how inversions actually work

Im 19, don't know anything about investments, I wanna invest in stocks like the S&P 500 cause I have heard that is the most secure option, but idk how, how it works? It theres a limit? Is there a web, and app? What is the things or thing that everybody use to invest

And, Could I just buy GTA 6 with GTA 6, in the sense that ik that Rockstar company is going to go damn up after the launch of the game, couldn't I get advantage on that and invest money before a big spike and triple my money? Ik it probably isn't that easy but im curios