To increase your chances of winning big at online Roulette tournaments, focus on understanding the tournament structure and rules to devise a solid strategy. Practice with free games to hone your skills and become familiar with different betting strategies. Manage your bankroll wisely, ensuring you have enough to participate throughout the tournament. Pay attention to your opponents’ betting patterns, and consider adjusting your strategy accordingly. Lastly, stay calm and composed during gameplay, as maintaining focus can lead to better decision-making.