Google Play services is used to update Google apps and apps from Google Play.
This component provides core functionality like authentication to your Google services, synchronized contacts, access to all the latest user privacy settings, and higher quality, lower-powered location based services.
Google Play services also enhances your app experience. It speeds up offline searches, provides more immersive maps, and improves gaming experiences.
Apps may not work if you uninstall Google Play services. Understanding how these search strings work reveals the

Understanding how these search strings work reveals the underlying structure of the web, the mechanics of search engine indexing, and the security implications for website administrators. Deconstructing the Search Query
Also, the user might be looking for higher quality versions of the movie (the "BETTER" part). Maybe they found an older version and are trying to get a better one, but the server's directory index is sorted by last modified, so the newest or supposedly better version is at the top. But it's important to clarify the legality here.
These are common file extensions for video and audio formats:
When users search for index of / followed by a topic, they are looking for open web directories. These are FTP (File Transfer Protocol) sites or directories on web servers that have not been restricted from public viewing.