This is the first time that I hear about some telegram group, bitcointalk telegram group sounds even more confusing for me. Can OP say something more about it, I don`t wish to sound stupid but telegrams are long behind us, now we have modern ways for communication.
I saw one nice comment, you can open group like that one here. In any case it would be nice you to give us some more info about your wishes, and what exactly you wish. Then we can help you more, it`s how it goes. Good luck my friend, I hope you will find what you searching for.