Hi Henrique,
One of my favorite indicators is volume as a sudden rise in volume usually means there's a pump (or dump) around the corner.
You can use CoinGecko for example to see which assets have had the biggest change in volume in the past 24h (https://www.coingecko.com/en/exchanges/binance).
I also like the 20, 50, 100, and 200 MAs. As the price rises, it often stays above a certain MA and when this MA is crossed, we can expect a bigger correction (or a dump).
I also recently discovered a useful indicator on TradingView called The Darvax Box which simply draws boxes (or lines) around lows and highs and produces buy and sell signals (I find it works particularly well on the 1H chart, although I didn't backtest it).
Finally, a great way to find volatile pairs is to follow the change in open interest which you can do on Coinalayze (https://coinalyze.net/?order_by=oi_24h_pchange&order_dir=desc)
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Hope this helps!