I believe Many casino players do utilize pre-set strategies when playing various games, including blackjack. There are several popular blackjack strategies that players use, such as basic strategy and card counting. These strategies are designed to give players the best possible chance of winning in any given situation. However, not all players use these strategies, and some may rely on their instincts or emotions to guide their decisions. Ultimately, the choice to use a pre-set strategy is up to the individual player.