because pumps and dumps can happen at any time, even when you sleep so no one can predict what happens on weekends because it's the same as the other days.
yes indeed no one knows for sure what will happen to the market situation going forward, but if you look more closely with the cycle of market movements, you will at least understand the moment that happens every hour and that way you will be able to use the moment to get profit.
even though every day is almost the same but there will always be moments where you will be able to get profit if you do a daily trading strategy.