I believe that a person who is looking for strategies should use them all, that is, not stick with just one but use all the ones that are learned or investigated, because what he always gave me to understand in a casino game is that a pattern that is repeated the chances of losing are much higher.
There is a contradiction in your statement because if you follow a strategy (doesn't matter which one), you are basically going to follow a pre-defined pattern. Take martingale as an example: if you win - you bet the same amount again, if you lose - you double your bet <- this is a pattern and all other strategies work the same way.
Besides, we know that in fair games based on luck, each bet is independent from the previous one. So, nothing can improve your chances.