I was on the BID for +6000 shares at 0.06. Today +9000 shares were traded at 0.05-0.0567. I got 0 shares.
That's very normal nowadays. Orders below the visible treshold will only get filled very rarely, many years back that was different, you got lot's of fills in between if you were invisible but that totally changed like 5 years ago or so. Sometimes it happens but usually the MM's don't like to do it.