Trend lines are among the most accurate buy and sell indicators, along with simple moving average, stochastic, moving average convergence divergence, and relative strength index being the top trading indicators that help traders analyze the market signals effectively.
The best divergence indicators mt4 are MACD, RSI, stochastic, OA. They are user-friendly and simple but provide quite accurate trading signals. You can learn more about stochastic oscillator trading forex in the article Stochastic Oscillator: guide for using indicator in Forex trading.