Looks like they’re finally cleaning up a bunch of junk.

In July 2024, Google announced it would raise the minimum quality requirements for apps, which may have impacted the number of available Play Store app listings.

Instead of only banning broken apps that crashed, wouldn’t install, or run properly, the company said it would begin banning apps that demonstrated “limited functionality and content.” That included static apps without app-specific features, such as text-only apps or PDF file apps. It also included apps that provided little content, like those that only offered a single wallpaper. Additionally, Google banned apps that were designed to do nothing or have no function, which may have been tests or other abandoned developer efforts.

You can use something like Anything LLM for RAG:

https://github.com/Mintplex-Labs/anything-llm

It works with local models.

https://docs.anythingllm.com/agent/usage#what-is-rag-search-and-how-to-use-it