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.
The best trading bots to use are those that have the dev teams can be reached easily unlike groups that send out various trading signals which are either copied from some other group or small person/group trying to maximise on their profits as these are usually not free.