How can I patch a non-steam game?

Hello everyone, how you doing?

Recently I found out a old Age of Mythology game DVD that my mom bought to me when I was a kid. It was pretty exciting because AoM was one of my favorites games growing up, and I was even more excited when I discovered that the game is still being updated and a new patch was released pretty recently. (https://www.ageofempires.com/news/aom-update-2-8/)

But I’m having trouble updating my game. On the research that I did, I was only able to find guides related to the steam version of the game.

So, is there any way that I can patch my old game? Or I need to buy a new version?

The version of my game is V 1.10 on the “main game” and V 1.03 on the titans expansion. (Also, they are supposed to be different versions?).

1.03 is the latest official patch for original non-steam version of The Titans.

Unofficial Voobly fanpatch also exists, and if you want to play online it is most often used. Google it.