I can't say about it and i don't have enough information about it but there are many telegrams group even most of them are free, but some are paid. They are predicting even the dip of the coins that at which range you should buy and at which range you should sell the coin.
I wont join that group even if its free because I know, they are the pump and dump group and if you are too slow, expect to lose money so better to depend on yourself and create your own strategy. Many indicators can tell this one, use a multiple one and make sure you understand that, MACD or RSI can tell if the market is already oversold, that could be your sign.