I recommend to learn every indicators and use what you think is very helpful for your daily activities.
MA, RSI, and MACD are the common combinations of indicators, they can tell you the trend but still if you know other indicators, you can confirm if your analysis is correct or wrong that’s why it is still important to learn more. Trading doesn’t end with those indicators, you can also look at the VOLUME and PRICE to see the future trend, this is a broad process but once you do master it, trading will be more easy for you.