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.
Just because you seem new to me in crypto trading, I tell you some truth I have realized over the years about telegram groups.
There are three types of groups mainly:
1- Manipulators: The ones who manipulate the market with the help of a large number of supporters. They will ask all the subscribers/members of the group to buy a particular coin at an instant to hike the prices. Such groups are rare and hard to find.
2- Scammers: These groups will simply take the money and block you forever. Easy to find obviously.
3- Trolls: Some of the groups have overconfident and troll admins who will post any signals/predictions and then delete once it backfires.