The best way to win more games on roulette (or to minimize the risk to lose money on the roulette wheel, if you wish) is to focus on the outside bets. Although these roulette bets do not lead to mind-blowing wins, keeping your bets on the odds/even, red/black, and high/low gives you the highest chances to score a win.
What are the best odds in roulette? The bets with the best odds in roulette are outside bets on either even or odd, red or black or numbers 1-18 or 19-36. Each of these bets has a 1:1 payout.