Completely inaccurate results from file read

A user reports that LM Studio's RAG system fails to read uploaded PDF files, instead generating inaccurate results based on internet searches. The issue persists across multiple models including DeepSeek, Qwen3-14b, and Llama 3 8b, producing poor outputs for tasks like creating discussion worksheets and blurbs.

Hello, I am new to all this. I have LM Studio set up and downloaded several models. I also set up RAG I think . I am trying to use it to read a pdf of one of my novels and create a discussion worksheet, a new blurb, etc. I have tried a few different models to do this, including DeepSeek, Qwen3-14b and Llama 3 8b. None of them seem to actually read the pdf file I provide. At best, it seems to search the internet for details and create something from that. The results have been poor to absolute rubbish based on whatever it seems to be getting the information from. I have very little idea of what I am doing here, so if there is a better approach, any help is greatly appreciated.