Choosing between price action or indicator is not a matter of which one is better but a quest of traders' understanding of the market. For beginners, it's probably safer to use indicator trading.
Short-term charts sometimes need a different treatment when it comes to strategy building. What if you happen to rely on MACD and try to use it in a 15-minute chart?
The TEMA crossover strategy is actually pretty simple. What makes it special is the main indicator used that reflects a much faster response than the common EMA.
As a subjective technical analysis, chart patterns can be an object of debate among traders. The truth is, you just need to make sure of these 3 things to ensure the reliability.