JAVASCRIPT

eas generate apk

eas build -p android --profile preview

eas build apk

//edit eas.json
{
  "cli": {
    "version": ">= 0.52.0"
  },
  "build": {
    "development": {
      "developmentClient": true,
      "distribution": "internal"
    },
    "preview": {
      "android": {
        "buildType": "apk"
      },
      "distribution": "internal"
    },
    "production": {}
  },
  "submit": {
    "production": {}
  }
}

//build with that profile
eas build -p android --profile preview

eas build apk

To specify building an APK instead of an App-bundle with
EAS Build, Add build type to the appropriate release-channel:
     // Add this in eas.json to your release channel
     "android": {
        "buildType": "apk"
      }