Players have reported varying degrees of success with progressive betting systems like Fibonacci and Labouchere in roulette, which adjust bet sizes based on previous results to capitalize on winning streaks and recover losses. These systems offer a structured betting approach that can lead to short-term gains. However, their effectiveness is influenced by factors such as the player's bankroll, table limits, and game conditions. Despite the potential for a perceived strategic advantage, these systems do not change the fundamental odds of the game, and players can still face significant losses during losing streaks.