1. Moving Average Indicator (MA)

Advantages: Simple and easy to use, smooths price fluctuations, helps identify trend direction.
Disadvantages: Strong lag, prone to false signals in volatile markets.
Common Usage:
Single Moving Average: Price above the moving average indicates an upward trend; price below the moving average indicates a downward trend.
Double Moving Average (e.g., MA50 and MA200): Short-term moving average crossing above long-term moving average (Golden Cross) indicates bullish; conversely (Death Cross) indicates bearish.
Multiple Moving Averages Combination (Moving Average Fan): When moving averages are in a bullish arrangement, it indicates an upward trend; when in a bearish arrangement, it indicates a downward trend.

2. MACD (Moving Average Convergence Divergence)

Advantages: Combines moving average trends and momentum, better assesses trend strength.
Disadvantages: Still has lag, may fail in volatile markets.
Usage:
DIF line crossing above DEA line (Golden Cross): Bullish signal.
DIF line crossing below DEA line (Death Cross): Bearish signal.
MACD histogram expanding or contracting: Represents changes in trend strength.

3. Candlestick Patterns

Advantages: Intuitive, provides direct feedback on market psychology.
Disadvantages: Requires high level of experience, strongly subjective.
Common Patterns:
Upward Trend: Consecutive bullish candles, breaking important resistance levels, clear moving average support.
Downward Trend: Consecutive bearish candles, breaking key support levels, moving average resistance.
Key Reversal Signals: Morning Star, Evening Star, Engulfing patterns, etc.

4. Trendline & Channel

Advantages: Can be used to confirm trend direction, support, and resistance levels.
Disadvantages: Requires manual drawing, strongly subjective.
Usage:
Upward Trend: Connect low points to form a trendline, price operates above the trendline.
Downward Trend: Connect high points to form a trendline, price operates below the trendline.
Channel: Price fluctuates between trendlines, can be used as a buying and selling reference.

5. Bollinger Bands (BB)

Advantages: Combines trend and volatility, can assess trend strength and overbought/oversold conditions.
Disadvantages: In a one-sided trend, price may run along the upper or lower band for a long time, easily misjudged.
Usage:
Price running along the upper band: Upward trend, may continue to rise.
Price running along the lower band: Downward trend, may continue to fall.
Bollinger Bands Squeeze: Decreasing volatility, may be brewing a major movement.

6. ATR (Average True Range)

Advantages: Measures market volatility, helps assess trend stability.
Disadvantages: Does not directly provide buy/sell signals, needs to be used in conjunction with other indicators.
Usage:
ATR value rising: Trend may strengthen.
ATR value falling: Market may enter consolidation.

Conclusion

If you are a beginner, moving averages (MA) are the simplest and easiest trend judgment tool, and pairing with MACD can improve accuracy.
If you want to reduce lag, you can combine trendlines, Bollinger Bands, or candlestick patterns.
If you are concerned about market volatility, ATR and Bollinger Bands will provide better references.
The best way to judge trends is usually to combine multiple indicators rather than relying solely on moving averages.