There's no best crypto signal group but only the scam crypto signal group and I will advise you to do yourself some favor by searching the word "crypto signals group on Telegram" on the search section of this forum and you will quite a huge number of people who are once a victim the pyramid scheme of the crypto trading signal.
Finding multiple examples of this will take less than five minutes, do people do not really care about their money?
They do care about their money but when greed and lack of knowledge take over any human such a human will does more harm to herself than anyone could do.
Many are investing their savings they have accumulated over many years, I would think that someone doing something like that will do everything they can so they only invest their money on projects which are solid, and a signal group does not qualifies as solid at all, because even if the group was not a scam or a pump and dump group do people think they will learn something useful from that group that they cannot learn from a book already?
I believe the reason why most newbies are victims of this is that they never ask themselves the right question and the impression of crypto being a pot of gold where they could easily pack theirs
(because they never care about the technology and also want the easy way).