MacD – The MacD indicator shows the momentum of a security. The exponential moving average (EMA) calculates the MacD. The 26 day EMA is subtracted from the 12 day EMA, then plotted on a chart. The 9 day EMA is plotted, which acts as the gauging line. This indicator can help show when the momentum slows and is primed for a breakout or breakdown.
https://fairmontequities.com/how-to-calculate-the-macd/
RSI – The RSI is another momentum indicator on a 0-100 chart. When the security is over 70, it is overbought. When it is less than 30, oversold is the indication. The MacD shows when a move in a particular direction has a chance of slowing down for a pullback. RSI is a two-step calculation, and the link below shows the calculation as it is rather complicated.
https://www.investopedia.com/terms/r/rsi.asp
Volume – The volume indicator shows how much people traded on a particular day. The larger the volume indicators, the stronger move. For example, if there is a lot of volume on a high-up day, it is a more decisive move to the upside, which means it is more likely to continue.
Moving Average – The moving average is the average price over the last X period, which X is typically days. When the price is above this, it shows a more bullish trend, whereas below, it shows a more bearish trend. Normally, I use 50 and 180 days to measure the average over.
Something to remember with technical indicators, no indicator will show you 100% what will happen. They are just tools to help you with the probability security will begin reverse directions for either a buying opportunity or a good time to sell.