Many of the telegram groups which give signals are run by the same people, I have noticed on multiple occasions of the groups giving the same signals. Many of the groups also conduct coordinated pump and dumps, and they usually send it in all the groups to gather a greater audience. Although some of the signals turn out to be correct, always do your own research before making a trade.
As a matter of fact they are just using the members to ammas money to a shitcoin but they were the first one to purchase it and awaits the growing money then sell it leaving you stuck on holding and you are clueless on what are you going to do since you purchase a shitcoin that has no chance to increase unless you introduce or manipulate it just like having your own telegram signal.