What is wrong with my build.gradle?

Question

gradle

What is wrong with my build.gradle?

plugins {
    id 'com.android.application'
    id 'com.google.gms.google-services'
}

android {

    buildFeatures {
        viewBinding true
    }
    compileSdk 31

    defaultConfig {
        applicationId "com.buratinoapps.freelitecoinfaucet"
        minSdk 21
        targetSdk 31
        versionCode 1
        versionName "1.0"

        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
}

dependencies {
    implementation fileTree(dir: "libs", include: ["*.jar"])
    implementation 'androidx.appcompat:appcompat:1.2.0'
    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'

    implementation 'androidx.multidex:multidex:2.0.1'

    implementation 'com.google.android.material:material:1.2.0'
    implementation 'androidx.cardview:cardview:1.0.0'
    implementation 'com.google.firebase:firebase-auth:19.3.2'
    implementation 'com.google.firebase:firebase-database:19.3.1'
    implementation 'com.google.firebase:firebase-storage:19.1.1'
    implementation 'com.google.firebase:firebase-ads:19.3.0'

    implementation 'com.facebook.android:audience-network-sdk:5.11.0'

    implementation 'com.google.android.gms:play-services-ads-identifier:17.0.0'
    implementation 'com.google.android.gms:play-services-base:17.4.0'

    //poll_fish
    implementation 'com.pollfish:pollfish:5.5.1:[email protected]'

    implementation 'de.hdodenhof:circleimageview:3.1.0'
    implementation 'com.karumi:dexter:6.2.1'
    implementation 'com.github.f0ris.sweetalert:library:1.6.2'


    implementation 'com.github.bumptech.glide:glide:4.11.0'
    implementation 'androidx.legacy:legacy-support-v4:1.0.0'
    implementation project(path: ':ayetpublisher3.5')

    annotationProcessor 'com.github.bumptech.glide:compiler:4.11.0'

    testImplementation 'junit:junit:4.13'
    androidTestImplementation 'androidx.test.ext:junit:1.1.1'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
}

Gives an error message

Build file 'C:\Users\Viktor\AndroidStudioProjects\FreeLitecoinFaucet\app\build.gradle' line: 3

Plugin [id: 'com.google.gms.google-services'] was not found in any of the following sources:

If I delete a line
id 'com.google.gms.google-services'

I get an error