I think this is the first time I got all grey on my first try, but of course that ruled out 5 common letters, helping narrow down the remaining possibilities significantly. On my third try I would have been very surprised if BANAL wasn’t the answer.
Almost ruined my perfect record today. I really thought I had it on the fifth try as there weren’t that many possibilities that I could think of with the remaining options. Even though it was wrong, it got me close enough to get it on the sixth.
I think this is the first time I’ve needed all six. (I have the browser set to wipe all history when I shut down the computer, so the history the Wordle site gives me is incomplete – they think I’m somebody else if I’ve shut down.)
ETA: I can’t remember whether, when I first started playing this, I had one I couldn’t get at all.