Unfortunately, there is no legal way to install the Age of Empires games for free. All of the official versions of the game require purchase, either from the Microsoft Store or from Steam.
While there may be unofficial or pirated versions of the game available online, we do not recommend downloading or installing these as they are often illegal and may contain viruses or malware that can harm your computer.
If you are interested in playing Age of Empires, we recommend purchasing the game from a legitimate source such as the Microsoft Store or Steam. You may also be able to find the game at a local retailer or online store that specializes in video games.