There is nothing completely safe on the markets.
In order to make your account safe from the absolute loss, it is not the trading strategy to pay attention to, but risk and money management. These concepts are of much importance because it depends on how much money you put at risk in order to gain the profits. Trading strategies can be different and all of them have some strong and weak points. In order to understand it you need to backtest the strategies that you want to implement and analyse the results. If you think that trading strategies did a nice job on historical data, you can try them out on your demo account and see whether they can be implemented today. If they are doing well with the contemporary market, then you can start using them trading real money, but never forget about risk and money managment, otherwise, you risk too much. As for trading strategies, you can find lots of them on different forums, where traders are willing to share their trading ideas with the whole community. I believe that this procedure can diversify your trading and save your money.