Yes... it can be annoying, I completely understand as I have seen this many times. Mostly, I hate to say it ends up being trial and error in many cases, relying on proper instructions, use of synonyms etc that many times are more finely ingrained in the free M365 site.
Maybe...l you can make up the question etc. Meaning word it as simply a sample and explain how in the free you get answer ABC but when you ask that same in your agent you get YTX
Trying to come up with a way for your to very clearly write a Question out, regardless of the fact its not about your content, so that we can compare.
One funny thing to try, just for kicks
1) Do you have semantic search turned on? Not sure if you are using sharepoint etc but at the M365 level? Do you have even one license for someone so you can enable that?:
2) I realize its for work but if you tried
Ask a question to M365 free Copilot. unrelated to work. get the answer
I your Agent, burn on Public sites and ability for it to (essentially use bing).
Then ask that question to your Agent, see if it in fact finds that same information exactly or close.
trying to narrow down the deficiency to help you
