I do also mix with amount of my bets. I usually play poker and my bets depends on cards that I have. Normally if I am sure in my hand my bettings are more rough and high.
Playing poker is fun we can determine whether to continue betting or not and if we are lucky on a card in the hand, it is certain we will win gambling if the house has a fair system. I only bet with money that can lose at the beginning and after learning what happened, then next I can increase bets and continue playing in the same way or even reduce the chances of winning to get a better profit.