While I was on section in my account, I was wondering if it is possible for someone to simply have a technique that gets them 100% - 98% win rates.
100% success rate? Given that gambling involves a 50/50 probability, it should be obvious that this will be impossible to accomplish. Whatever method you use, a wager that cuts will still cut. However, it is best to adopt a strategy and make sure you take all relevant elements into account so you don't wind up regretting and gambling carelessly.
Knowing the game's pattern, what to bet on and what not to gamble on, the winning and losing numbers, and so on, would I still be able to achieve a 100% win rate?
It does not ensure a win; it can simply lower your loss rate and raise your chances of success. Everyone would have mastered all the methods and game patterns necessary to reach a 100% win rate if it were 100% guaranteed.
However, if it were the case, gambling would have been so boring.