Usually with the science of prediction and careful decisions, and ready to lose at any time. It was preparation to become a good crypto trader. To make a good profit, you just need to be consistent and targeted in trading. That would be a very good profit to run.
The trader's own perception is more important. There are so many indicators to run and so much stuff that you can learn from them. But the conclusive prediction can never be done. It is because the market runs on different events and they all have a chance of happening anytime that you cannot foresee.
Consistently making the same mistake will not yield a profit. You have to be smart here - do the opposite of what the common people think. But this is difficult to perform.
If it was possible to just use a indicator to perform everything, then the people who worked on TA would have become millionaires already.
you can spot trading, select some good coins and check the chart and see when the coin price going down just buy it from dip and sell it when it high.
Simple and effective, indeed. But most newbies dont like that because they are in it to get-rich-quick and therefore they fall prey of shitcoins, scams, hyips and so on which are rampant in this sector due to a lot of reasons.