You never got benefits from public trading group which any platform (telegram, facebook, whatsapp). Because no one will provided right strategy in public group in totally free, in paid group controlled by financial advisor who share strategy on time.
I would not give them the "financial advisor" tag - do some background research and you will find out some economics graduate or not even that, just a layman trying to force feed shitcoins on newbies so they can sell their bags. Why else are these groups popping up so often? It is because they are an easy modus of scamming some innocent newbies of their bitcoins by dumping shitcoin on them.
Thats how both these groups run - the person running them are usually some manipulative sweet-talker, who gains their trust and uses their money to run this "legit" scam.
To be honest, I liked these telegram chats. There are more adequate traders in terms of communication, and can help if necessary.
Sorry to break your bubble, buddy. You need to see the reality at times too. I dont brush aside the fact that real traders also exist, but you might not know that majority of such people usually work in the dark and never boast of their achievements unless you talk to them personally. The ones who promote groups and all are scammers - you dont have to believe me, you will see it for yourself over time.