While bluffing is an important tool in any good poker players arsenal it should not be your main strategy and playing low and no value hands with bluffing in mind is never a good idea.
I only consider a bluff if I was holding good cards pre-flop but didn’t hit on the flop and my opponents are showing no interest in the flop or I read them holding a weak hand like a single pair or fishing for a flush or straight.
If I have a low odds possible or just a high card this would be the place for a quick bluff and usually a pot bet to get a fold.
This works best if there are not many players in the hand. The more players the more likely someone will call and hit on the turn.
If they are looking for a flush or another match for trips or a straight hit then you probably wasted that bluff and will have to fold so you have to know the odds of your opponent hitting a hand to calculate the risk of a bluff.
The majority of average players are risk averse so if they do not hit on the flop they will fold to any bet as long as you make them believe you did hit.
If I have a solid possible on the flop like a small pair or flush or straight hit then I am betting on the possible and that is called a semi-bluff.
You don’t have a winner yet but after calculating the odds of hitting your possible you know what your risk is and bet based on that possible hitting.
You have to evaluate what your opponent is likely holding and betting and if they have a history of fishing or bluffing or only betting pat hands.
If they have a history of fishing or bluffing and you have a strong possible then a substantial bet here might get you a fold for the pot or at least get you a look at another card.
The last bluffing strategy is the stone cold or naked bluff and is rarely used by advanced players because it is very high risk and if you get called it turns out badly and makes you look like a fool.
A naked bluff means you have nothing not even high card and you expect that your opponent has a hand better than yours but there is a possible on the table that you could convince them you hit.
For example you think your opponent has two pair but there is an obvious flush or straight possible on the table so you are bluffing that you hit that hand and scare them in to a fold.
This works best if you have not shown a history of bluffing and you have occasionally shown your cards on solid hands so you have convinced your opponents that you are not likely bluffing.
I have used a naked bluff only rarely when I get to the river and realize a fold would cost me a chance at getting in to the money in a tourney or I am up against a weak player that has a history of folding under pressure.
It is always a high risk play and usually turns out badly and might leave you looking like a fool but if you read your opponent and the risk of a bluff is less than a risk of a fold then a naked bluff is an option. Just don’t think it is a great strategy or should be used often. It is a hail marry play at best.
So that is my bluff strategy and it doesn’t require any mathematics calculations and relies more on understanding odds of your and your opponents hands and betting according to that risk and reading your opponent.