Options selling strategy that works in range bound market

I have tried different strategies to make money in stock market all these strategies are buying strategies, I have bought both call and put option several times and most of times I am in loss because option writers (sellers) know the movement of market and they increase and decrease premiums according to the volatility in market. I am planning to try options selling both put and call options same time with proper stop loss. This strategy requires more money but we consistently follow this strategy it will works on long run. It may give loss in volatile market but in range bound market it will give profit. Generally markets move either up or down or in range bound. Sometimes markets test patience of traders by not moving to either side but this type of range bound market will give profit to options sellers.