The market is constantly changing. Over time, working trading strategies become irrelevant. Although most of them have never been 100% effective.
Today, a huge number of trading systems based on moving curves have been created, the simplest trading tactic involves entering the market at the moment of crossing two moving curves.
You should open a buy trade at the moment when the fast curve crosses the slower one from bottom to top, at the moment of the opposite crossing it is recommended to open a sell trade.
But as you know, the market is moved by the news, so when important news comes out, moving averages are completely reconstructed according to the current situation.