Its very player dependent. Against alot of opponents I will check because I want them to bluff.

Against weaker, more passive players a scarecard for you either made their hand or its a scare card for them too. If you bet they might fold the hands you beat anyway because "he always has the flush". They wont bluff if they dont have it but they will bet if they do so just check and let them check. If they bet you fold.

Against good thinking players you just need to make sure youre thinking a level above them