Knowing when a coin pair is going to flip in a profitable way is a discipline that commodity traders, currency traders, and we crypto traders spend hours learning to master. Your choices around this are to:
1. Read someone else's blog about when to make a move
2. Learn one method and use it over and over in a variety of situations (In business, this is a horizontal integration)
3. Learn one coin pair and study several methods to predict its movement (vertical integration)
Let's examine option 1. To use this method, you need to find a trader who writes regularly and announces good trades. After that, your next question is whether that writer also trades. A writer who doesn't trade has no skin in the game, and that diminishes his credibility. Next, consider why the writer is writing this blog. Why? Because stock pickers, sports betting analysts, and traders all like to make a move and then encourage people to pile on either in the same or opposite direction so the writer can take a profit after everyone else bought in. Think about the GameStop story (here: https://abcnews.go.com/Business/gamestop-timeline-closer-saga-upended-wall-street/story?id=75617315).
I would recommend options 2 or 3. I'm impatient to get started on new skills, so I tend to stick with one or two methods that work well and then find opportunities -- it's how I bet sports and it's how I trade coin. Here's one method: The W and the M.
The W occurs when a price is going up, which is great when I want to sell the rising coin. The mid point in the W is because owners take a profit, but a cockeyed W, where the second V bottom is higher, tells me that the price is gaining momentum past the earlier high.
To learn more about momentum signals, watch this: https://www.youtube.com/watch?v=W3PCTl5kxe0
Here's an example of a W that worked:
Look at that! Just a few drops in price while traders took a profit and then the rally resumed. This is BTC-USD, and this rally is why my ETH-BTC sale order is still waiting to execute.
M's indicate a drop in price, which is great if I want to buy the dropping coin. Here's an example of an M.
What will you use? Single candlestick signals are also popular, and you can check them out through Investopedia, here: https://www.investopedia.com/trading/candlestick-charting-what-is-it/
Meanwhile, remember that you can earn crypto through games like RollerCoin, here: https://rollercoin.com/?r=keipqv8z
Also remember that you are using your own money and your own decisions while trading coins. Don't use your food money! I am not your financial advisor.