One of the most common trading systems is the 200 sma crossover system. Buy when the price closes above the 200 sma and sell when when price closes below the 200 sma. They say it is profitable although, I have not backtested it myself. This is a long term trend following system so, entries and exits are probably, very few and far between. Still, this could be a viable way to trade the stockmarket if you have the patience to wait for the signals, no matter how few and far between they are. Worth noting, moving average trading systems inherent weakness is when the stock prices are moving sideways, there are a lot of whipsaws. If you were to totally disregard the times the stock prices are moving sideways and only take trade signals when the stock is clearly trending, you can enhance the accuracy and probably, reduced the amount of drawdowns.
https://stockcharts.com/articles/ar...flirting-with-the-200-day-moving-average.html