Integrating Admob ads into a Flutter app is relatively straightforward and can be done in a few steps:

Add the 'firebase_admob' and 'flutter_native_admob' packages to the pubspec.yaml file.

Create an Admob account and register your app. This will provide you with the necessary App ID and Ad Unit ID(s) needed for the integration.

Import the packages in your dart file and configure the Admob with your App ID and Ad Unit ID(s)

Choose the type of ad you want to show. Admob provides several types of ad formats like interstitial, banner, native, and rewarded videos.

Create a function to call the ad using the ad format you selected.

Use the function to call the ad where it is needed in the app.

Test the ad in the app by running it in the emulator or on a device.

Once you are satisfied with the ad integration, you can deploy it to the app stores.

It's worth noting that you need to verify your account on Admob before you can show ads on your app.