As you may already know, the expected return to player (RTP) of any type of roulette bet is the same. The RTP of American roulette is 94.74%, whereas the RTP of European roulette is 97.3%. This means that you statistically get the same percentage of your money back, regardless of which type of bet you place.
In reality, all bets are not the same. In American roulette there is a bet called top line that has an RTP of only 92.1%. But let’s ignore this for now to make it a bit simpler. This doesn’t mean, however, that you should simply place bets without thinking about them, because volatility really does matter.
You must remember that the RTP of roulette is always less than 100%, which means that you are always statistically losing your money. If you place bets with low volatility, your results will stay close to the expected outcome, which is negative for you. However, when you place highly volatile bets, you have a higher chance to deviate from the negative expected results and actually end up winning some money, even though you are statistically still expected to lose.
In other words, to have a chance of winning big, you need to increase volatility. The best strategies in terms of a higher expected return value are generally those that consist of making higher volatility bets.