How can i hide succesfull elements of the website i like to show in webview?

i am very new to android studio and i am tryin to hide the 'cookie' element of my website i am showing in webview.

Now i don't really know what i have to do right, i tryed it this way:

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.webkit.WebView;
import android.webkit.WebViewClient;

public class MainActivity extends AppCompatActivity {

private WebView clanapp;


@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    clanapp = (WebView) findViewById(R.id.clanapp);
    clanapp.getSettings().getJavaScriptEnabled();
    clanapp.setWebViewClient(new MyWebViewClient());

    clanapp.loadUrl("javascript:(function() { " +
            "document.getElementById('cookie').style.display='none';})()");
    clanapp.loadUrl("javascript:(function() { " +
            "document.getElementById('cookie').style.display='none';})()");
    
    String ENROLLMENT_URL;
    ENROLLMENT_URL = "myURL";
    clanapp.loadUrl(ENROLLMENT_URL);

}

public final class MyWebViewClient extends WebViewClient {

    @Override
    public boolean shouldOverrideUrlLoading (WebView view, String url) {
        return false;


    }
}

}

Kindly thank you for every helping suggestion.