Increasing Copilot functionality for internal Sharepoint

Sadly we are having the same experience, where 300 of us are trailing it, and I am the one leading and advising and giving lessons on Prompt engineering. This has little to do with prompt engineering, even though I realise the same prompts can generate different results, when it tells you it cannot find anything, then the same prompt 10 seconds later does return something, there is no confidence. Other instances are when I ask it to return "all references to project X in the last week, list as bullet points with links", it might return 3 references. When I run it again, it returns a different 3, so obviously it wasn't returning "all". The "lack of confidence" is the biggest factor in our trial, and it is unlikely that we will move ahead with a whole company roll out. Product released to soon