Paste your site in the builder
Build a demo APK first to try it on your phone; Builder Pro builds the full app and the AAB.
Why WordPress sites make good apps
WordPress already handles everything an app needs from its content: posts, pages, categories, search, menus. A website app loads your live site, so a post you publish in the WordPress editor appears in the app the same moment — there is no app content to manage and no plugin to keep updated.
Settings that work
Use bottom tabs for your three or four main sections. Search works as a tab too: point it at /?s= and the search page opens. Turn on pull-to-refresh, choose the top progress bar loader, and add your site icon as the app icon.
Push for new posts
Create a OneSignal app, paste its App ID in the builder's Push step, and send a notification when you publish. OneSignal's WordPress integration can send them automatically. See push notifications for a website app.
Before you publish
Google Play wants apps that add value beyond the website: tabs, push and a good mobile theme do exactly that. Add a privacy policy page on your site that mentions the app, then follow the publishing guide.