I had the same experience, and searching for answers using keywords was not very effective. There are so many features that the terms I guessed were often a different concept in GIMP, leading to a bunch of irrelevant results.
I have found that ChatGPT solves this problem very well, so I don't even try searching first anymore. I can verbosely explain what I am trying to accomplish, and it tells me "that is called X in GIMP, and here is how to use it: ...".
A recent example is that the Bucket Fill tool was filling in adjacent pixels that were a slightly different color than the one I clicked on. ChatGPT told me this is called the "threshold" and how to change it to 0 so it only filled exact matches. I would have searched for something like "gimp bucket fill sensitivity" or "gimp bucket fill precision", then had to read through a forum answer or the GIMP documentation to see that term.