running an .iso file?

so i have a dumb question, trying to pirate a game that is from steam, and i downloaded it as a .iso file, i have it mounted to daemon tools lite, i downloaded the update patch, everything, but when i click to run the game it says "this app cant run on your pc"

ive used Daemon Tools before, and ive even played games that were formatted as .iso's but usually they are always older games for old consoles, so i download an emulator for that console and then the game works great. i dont know if i would need an emulator for this or what emulator i would need, considering its a Steam game, its available on console i think so would i download like an Xbox One emulator? im really not sure.