Xbox Consoles / PS4 / Release dates?

Long time user of this site, I always loved using the site as a safe way to get roms, but where are my Halo and Gears games. I absolutely adore these games and do not want them lost to time and forced to spend $500 for the console. Heres my last thing, I want PS4 games, they are amazing and beautiful in everyway but unfortunately I cannot find a safe site to download them, much less an emulator.