for trading groups like dump and pump signals I do not believe because they automatically buy when the price is cheap by buying a lot and only then they suggest to buy what they have bought and instantly they will make the price dump again and you are stuck in coin that is not too good, so I suggest do not believe in a group like that, you better learn to see the existing chart and analyze existing news you can see it all at https://coinmarketcap.com, that little info I give to you.