Search the ios app store on a laptop?

Depends on the laptop.

For M1 Macs you can search for supported iPhone and iPad apps in the Mac App Store directly.

https://www.howtogeek.com/701486/how-to-run-iphone-and-ipad-apps-on-mac/

For Intel Macs and Windows computers, you can enter the name of the app in a Google search followed by the words "in the App Store" and it should produce some results.

Alternatively you can browse a selection of Apps here: link-> https://apps.apple.com/us/genre/ios/id36

Try this; https://fnd.io/ and this: https://theappstore.org/