Im trying to jailbreak an iphone 3gs

Ive tried so many ways, ive tried through redsn0w, it didnt work, i tried through p0sixspwn, nothing happened, ive tried the windows version of the MSYS2 github, this is because i dont own a linux or mac. i dont know what to do, im stuck in startup mode and cant use it normally so a jailbreak would be my only way to play with it. any advice?