Yes most of the indicators use lagging data and can double the trouble for many traders using such indicators.
Given the underlying bullish nature of stock indices and especially the US indices, no complicated strategies are necessary. And betting against the US stock market is a poor bet. The simplest strategy I can think of is to set a buy order at the Nasdaq's daily High at every Close, with a stop-loss at the day's Low. Exit at the first profitable Close. And keep doing this no matter where price is.
And the result is? What if I do the reverse: buy at daily low and sell at daily high? With an up bias, wouldn't that be a better strategy?
The result is a good profit with minimal TA or homework. It's easily backtested. As for the reverse, this might possibly be profitable very long-term, but I suspect the drawdown to be extreme pain during corrections. In general, I'd rather have a buy order triggered in a rising market, than a long position open in a falling market, even if that's short-term.