Keep in mind that Roulette is completely "random", therefore trying to "predict" a pattern is simply just "guessing", although an educated one since your guess is based on a System (a set of rules). So the only way to beat roulette is to incorporate the "fight fire with fire" approach - Meaning since Roulette is random, the System you're using must also be based on randomness. In other words, the only way to beat Roulette is to use the same "ammo" it uses against Players, which is "randomness". Otherwise "set" Systems which are based on specific (not random) set of rules for choosing what to bet on the Roulette table, will eventually LOSE long-term.
But this doesn't mean you should "aimlessly" bet any which way haphazardly, that would be just simply "gambling". You obviously need a very smart System that has more than 50% chance of winning each bet - therefore 1-1 Even Money bets won't cut-it. So this means using the Double-Dozen strategy - 64.8% Win-rate (1-zero European Roulette). BUT like I've mentioned, it has to use randomness when instructing you which 2 Dozens to bet. So how can this be done without just simply "guessing"??? Simple, just go to Random.org which uses very "scientific" methods to calculate randomness automatically for you!
The second vital thing you need to add to Randomness, is to have a Low-Risk Money Management System that uses "safe" progressions. DO NOT use a System that only gives you several chances or less, then it goes bust! You WILL eventually LOSE!!! There IS a way to extend a progression up to 23x - BUT with a 100,000 Unit Bankroll, or 17x with a 10,000 Unit Bankroll. This may seem way too much, but not if you're using a Casino that has chips as low as .01-cents. Still may seem too much even with 1-penny Units, but not if you're an Investor with a "mindset" similar to what Professional Traders have when betting on the Markets. And the only Casino I know that has a .01 Cent Minimum AND with NO Table Limits is: Aurum Age Casino.
I gave away the "randomness" secret. Now the only thing left for you, is to figure-out how to achieve 17x - 23x Progressions. HINT: "Do the Math". ;-)