I like simplicity for trading and the one thing that has been consistent for me is the 'crossover' indicator. When the 10 day crosses below the 20 day then it's time to sell, when the 10 day crosses above the 20 day then it's time to buy.
I also look at the one hour chart with the 10 and 20 day to determine the longer term trend and use the 15 minute chart to find the entry points.
For longer term trading I would use the one hour chart using the same system.
Is this way too simplistic as it's the only thing that's working for me at the moment.
The only problem with trading this way is in a sideways market, where not much is happening e.g. BTC for the last 24 hours. In this situation if you're already in a trade it's better to either get out and wait for a better entry or stick with your position until a direction, either way, has been confirmed.