I can't find the app on my MacBook Air when I search through App Store and Google

If you're talking about the Find My app for the iPhone, here's a link to its description:

https://apps.apple.com/us/app/find-my-iphone/id376101648

The description says it will run on iOS 8.0 or later. I don't remember downloading this app to my iPhone, so maybe it comes as standard with some iOS installations.

What macOS version do you have on your MacBook Air? That information is available at Apple menu > About This Mac.

I don't remember exactly when the Find My app became available for Macs but it may have been Catalina (macOS 10.15). For a long time there was a Find My app on iPhones and on iPads but on Macs you had to use it in an internet browser ( www.icloud.com/find ).

I'm running Ventura (13.1). The "Find My" application came pre-installed in the Applications folder, but I don't see it in the App Store.

There is also the iCloud Web interface: https://www.icloud.com/

Find my is part of macOS. If you can't find it, you can utilize the web portal at https://icloud.com/find