bluffing is part of the game. Nobody cant have good cards so often as they play.
BUT You should feel that it's correct to bluff and you must do it correctly .. without any hint of weakness to other players. You can call with 2 3 to see the flop and win the pot if you act correctly.
whenever I was bluffing , I had a bad tournament , and I fell out of the tournament and I lost a lot of chips , I just reduced the opportunity to take the money
When you play the freerolls should not bluffing , there is no need not invested your money , should play relaxed , if you win a few dollars be happy , if you do not win anything always has the second freeroll
to me bleff depends on many situations, amount of chips you have, what position you are in the table and how many chips your opponent .Cuidado because you can get paid and stay in a difficult situation