You can certainly create your custom trading strategy, and many traders find this approach rewarding. Developing your own strategy allows you to tailor it to your trading style, risk tolerance, and market understanding. While using existing strategies can be a good starting point, customizing a strategy or building one from scratch enables you to incorporate personal insights and preferences, potentially improving your trading performance. However, whether creating or adopting, thorough testing and refinement are crucial to ensure the strategy's effectiveness in real market conditions.